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Records |
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Author |
Van Goethem, C.; Verbeke, R.; Pfanmoeller, M.; Koschine, T.; Dickmann, M.; Timpel-Lindner, T.; Egger, W.; Bals, S.; Vankelecom, I.F.J. |
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Title |
The role of MOFs in Thin-Film Nanocomposite (TFN) membranes |
Type |
A1 Journal article |
| |
Year |
2018 |
Publication |
Journal of membrane science |
Abbreviated Journal  |
J Membrane Sci |
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| |
Volume |
563 |
Issue |
563 |
Pages |
938-948 |
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| |
Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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Abstract |
Incorporation of MOFs in interfacially polymerized Thin-Film Nanocomposite (TFN) membranes has widely been shown to result in increased membrane performance. However, the exact functioning of these membranes is poorly understood as large variability in permeance increase, filler incorporation and rejection changes can be observed in literature. The synthesis and functioning of TFN membranes (herein exemplified by ZIF-8 filled polyamide (PA) membranes prepared via the EFP method) was investigated via targeted membrane synthesis and thorough characterization via STEM-EDX, XRD and PALS. It is hypothesized that the acid generated during the interfacial polymerization (IP) at least partially degrades the crystalline, acid-sensitive ZIF-8 and that this influences the membrane formation (through so-called secondary effects, i.e. not strictly linked to the pore morphology of the MOF). Nanoscale HAADF-STEM imaging and STEM-EDX Zn-mapping revealed no ZIF-8 particles but rather the presence of randomly shaped regions with elevated Zn-content. Also XRD failed to show the presence of crystalline areas in the composite PA films. As the addition of the acid-quenching TEA led to an increase in the diffraction signal observed in XRD, the role of the acid was confirmed. The separate addition of dissolved Zn2+ to the synthesis of regular TFC membranes showed an increase in permeance while losing some salt retention, similar to observations regularly made for TFN membranes. While the addition of a porous material to a TFC membrane is a straightforward concept, all obtained results indicate that the synthesis and performance of such composite membranes is often more complex than commonly accepted. |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
Amsterdam |
Editor |
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Language |
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Wos |
000441897200099 |
Publication Date |
2018-06-22 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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| |
ISSN |
0376-7388 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
6.035 |
Times cited |
84 |
Open Access |
OpenAccess |
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Notes |
; C.V.G. and R.V. kindly acknowledge respectively the Flemish Agency for Innovation through Science and Technology (IWT) (IWT, 141697) and the Flemish Fund for Scientific Research (FWO, 1500917N) for a PhD scholarship. The authors kindly acknowledge funding from KU Leuven through C16/17/005 and from the Belgian Federal Government through IAP 6/27 Functional Supramolecular systems. S.B. and M.P. acknowledge financial support from the European Research Council (ERC Starting Grant #335078-COLOURATOM). M.P. acknowledges funding from the European Union (ESTEEM2, No. 312483) and the HEiKA centre FunTECH-3D (Ministry of Science, Research and Art Baden-Wurttemberg, AZ: 33-753-30-20/3/3). The MLZ-Garching is kindly acknowledged for providing access to the NEPOMUC facilities (project no 11541). ; ecas_sara |
Approved |
Most recent IF: 6.035 |
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| |
Call Number |
UA @ lucian @ c:irua:153618UA @ admin @ c:irua:153618 |
Serial |
5132 |
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| Permanent link to this record |
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Author |
Verleysen, E.; Bender, H.; Richard, O.; Schryvers, D.; Vandervorst, W. |
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Title |
Characterization of nickel silicides using EELS-based methods |
Type |
A1 Journal article |
| |
Year |
2010 |
Publication |
Journal of microscopy |
Abbreviated Journal |
J Microsc-Oxford |
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| |
Volume |
240 |
Issue |
1 |
Pages |
75-82 |
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| |
Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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| |
Abstract |
The characterization of Ni-silicides using electron energy loss spectroscopy (EELS) based methods is discussed. A series of Ni-silicide phases is examined: Ni3Si, Ni31Si12, Ni2Si, NiSi and NiSi2. The composition of these phases is determined by quantitative core-loss EELS. A study of the low loss part of the EELS spectrum shows that both the energy and the shape of the plasmon peak are characteristic for each phase. Examination of the Ni-L edge energy loss near edge structure (ELNES) shows that the ratio and the sum of the L2 and L3 white line intensities are also characteristic for each phase. The sum of the white line intensities is used to determine the trend in electron occupation of the 3d states of the phases. The dependence of the plasmon energy on the electron occupation of the 3d states is demonstrated. |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
Oxford |
Editor |
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Language |
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Wos |
000281715400009 |
Publication Date |
2010-05-20 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0022-2720; |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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| |
Impact Factor |
1.692 |
Times cited |
11 |
Open Access |
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Notes |
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Approved |
Most recent IF: 1.692; 2010 IF: 1.872 |
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Call Number |
UA @ lucian @ c:irua:84879 |
Serial |
329 |
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| Permanent link to this record |
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Author |
Yang, Z.; Schryvers, D.; Roels, F.; d' Haese, P.C.; de Broe, M.E. |
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Title |
Demonstration of lanthanum in liver cells by energy-dispersive X-ray spectroscopy, electron energy loss spectroscopy and high-resolution transmission electron microscopy |
Type |
A1 Journal article |
| |
Year |
2006 |
Publication |
Journal of microscopy |
Abbreviated Journal |
J Microsc-Oxford |
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| |
Volume |
223 |
Issue |
2 |
Pages |
133-139 |
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Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT); Pathophysiology |
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Abstract |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
Oxford |
Editor |
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Language |
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Wos |
000239702700006 |
Publication Date |
2006-08-10 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
|
Series Issue |
|
Edition |
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| |
ISSN |
0022-2720;1365-2818; |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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| |
Impact Factor |
1.692 |
Times cited |
29 |
Open Access |
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Notes |
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Approved |
Most recent IF: 1.692; 2006 IF: 1.947 |
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Call Number |
UA @ lucian @ c:irua:59109 |
Serial |
633 |
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| Permanent link to this record |
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Author |
Cao, S.; Tirry, W.; van den Broek, W.; Schryvers, D. |
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Title |
Optimization of a FIB/SEM slice-and-view study of the 3D distribution of Ni4Ti3 precipitates in NiTi |
Type |
A1 Journal article |
| |
Year |
2009 |
Publication |
Journal of microscopy |
Abbreviated Journal |
J Microsc-Oxford |
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| |
Volume |
233 |
Issue |
1 |
Pages |
61-68 |
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Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT); Vision lab |
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Abstract |
The 3D morphology and distribution of lenticular Ni4Ti3 precipitates in the austenitic B2 matrix of a binary Ni51Ti49 alloy has been investigated by a slice-and-view procedure in a dual-beam focused ion beam/scanning electron microscope system. Due to the weak contrast of the precipitates, proper imaging conditions need to be selected first to allow for semi-automated image treatment. Knowledgeable imaging is further needed to ensure that all variants of the precipitates are observed with equal probability, regardless of sample orientation. Finally, a volume ratio of 10.2% for the Ni4Ti3 precipitates could be calculated, summed over all variants, which yields a net composition of Ni50.27Ti49.73 for the matrix, leading to an increase of 125 degrees for the martensitic start temperature. Also, the expected relative orientation of the different variants of the precipitates could be confirmed. |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
Oxford |
Editor |
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Language |
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Wos |
000262511900008 |
Publication Date |
2009-01-15 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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| |
ISSN |
0022-2720;1365-2818; |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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| |
Impact Factor |
1.692 |
Times cited |
22 |
Open Access |
|
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| |
Notes |
Multimat Fwo; G0465.05 |
Approved |
Most recent IF: 1.692; 2009 IF: 1.612 |
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| |
Call Number |
UA @ lucian @ c:irua:76026 |
Serial |
2486 |
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| Permanent link to this record |
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Author |
Montoya, E.; Bals, S.; Van Tendeloo, G. |
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Title |
Redeposition and differential sputtering of La in transmission electron microscopy samples of LaAIO3/SrTiO3 multilayers prepared by focused ion beam |
Type |
A1 Journal article |
| |
Year |
2008 |
Publication |
Journal of microscopy |
Abbreviated Journal |
J Microsc-Oxford |
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| |
Volume |
231 |
Issue |
3 |
Pages |
359-363 |
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Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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Abstract |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
Oxford |
Editor |
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Language |
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Wos |
000259611000001 |
Publication Date |
2008-08-28 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0022-2720;1365-2818; |
ISBN |
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Additional Links |
UA library record; WoS full record |
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| |
Impact Factor |
1.692 |
Times cited |
|
Open Access |
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| |
Notes |
The authors are grateful to M. Huijben and G. Rijnders of the MESA+ group at the University of Twente (NI) for the growth of the multilayers. This work has been performed under the Interuniversity Attraction Poles programme – Belgian State Belgian Science Policy. The authors acknowledge financial support from the European Union under the framework 6 program under a contract for an Integrated Infrastructure initiative. Part of this work was performed with financial support from the European Union under the framework 6 programme, under a contract for an Integrated Infrastructure Initiative (Reference No. 02601.9 ESTEEM). |
Approved |
Most recent IF: 1.692; 2008 IF: 1.409 |
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| |
Call Number |
UA @ lucian @ c:irua:76522 |
Serial |
2849 |
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| Permanent link to this record |
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Author |
Potapov, P.L.; Kulkova, S.E.; Schryvers, D. |
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Title |
Study of changes in L32 EELS ionisation edges upon formation of Ni-based intermetallic compounds |
Type |
A1 Journal article |
| |
Year |
2003 |
Publication |
Journal of microscopy |
Abbreviated Journal |
J Microsc-Oxford |
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| |
Volume |
210 |
Issue |
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Pages |
102-109 |
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Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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Abstract |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
Oxford |
Editor |
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Language |
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Wos |
000182189600014 |
Publication Date |
2005-12-01 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0022-2720;1365-2818; |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
1.692 |
Times cited |
11 |
Open Access |
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Notes |
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Approved |
Most recent IF: 1.692; 2003 IF: 1.779 |
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Call Number |
UA @ lucian @ c:irua:48778 |
Serial |
3328 |
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| Permanent link to this record |
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Author |
Ramachandran, D.; Egoavil, R.; Crabbe, A.; Hauffman, T.; Abakumov, A.; Verbeeck, J.; Vandendael, I.; Terryn, H.; Schryvers, D. |
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Title |
TEM and AES investigations of the natural surface nano-oxide layer of an AISI 316L stainless steel microfibre |
Type |
A1 Journal article |
| |
Year |
2016 |
Publication |
Journal of microscopy |
Abbreviated Journal |
J Microsc-Oxford |
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| |
Volume |
264 |
Issue |
264 |
Pages |
207-214 |
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Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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Abstract |
The chemical composition, nanostructure and electronic structure of nanosized oxide scales naturally formed on the surface of AISI 316L stainless steel microfibres used for strengthening of composite materials have been characterised using a combination of scanning and transmission electron microscopy with energy-dispersive X-ray, electron energy loss and Auger spectroscopy. The analysis reveals the presence of three sublayers within the total surface oxide scale of 5.0-6.7 nm thick: an outer oxide layer rich in a mixture of FeO.Fe2 O3 , an intermediate layer rich in Cr2 O3 with a mixture of FeO.Fe2 O3 and an inner oxide layer rich in nickel. |
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Address |
Electron Microscopy for Materials Science, University of Antwerp, Antwerp, Belgium |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Language |
English |
Wos |
000385944300009 |
Publication Date |
2016-06-17 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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| |
ISSN |
0022-2720 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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| |
Impact Factor |
1.692 |
Times cited |
12 |
Open Access |
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Notes |
This work was supported by SIM vzw, Technologiepark 935, BE-9052 Zwijnaarde, Belgium, within the InterPoCo project of the H-INT-S horizontal program. The authors are also thankful to Stijn Van den Broeck for help in FIB sample preparation, to Hamed Heidari for useful comments and to the N.V. Bekaert S.A. company for providing the microfibres. RE acknowledges funding by the European Union Council under the 7th Framework Program (FP7) grant nr NMP3-LA-2010-246102 IFOX. |
Approved |
Most recent IF: 1.692 |
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| |
Call Number |
c:irua:134087 |
Serial |
4096 |
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| Permanent link to this record |
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Author |
Lu, J.; Bartholomeeusen, E.; Sels, B.F.; Schryvers, D. |
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Title |
Internal architecture of coffin-shaped ZSM-5 zeolite crystals with hourglass contrast unravelled by focused ion beam-assisted transmission electron microscopy: INTERNAL ARCHITECTURE OF COFFIN-SHAPED |
Type |
A1 Journal article |
| |
Year |
2017 |
Publication |
Journal of microscopy |
Abbreviated Journal |
J Microsc-Oxford |
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| |
Volume |
265 |
Issue |
265 |
Pages |
27-33 |
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| |
Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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| |
Abstract |
Optical microscopy, focused ion beam and transmission electron microscopy are combined to study the internal architecture in a coffin-shaped ZSM-5 crystal showing an hourglass contrast in optical microscopy. Based on parallel lamellas from different positions in the crystal, the orientation relationships between the intergrowth components of the crystal are studied and the internal architecture and growth mechanism are illustrated. The crystal is found to contain two pyramid-like components aside from a central component. Both pyramid-like components are rotated by 90 degrees along the common c-axis and with respect to the central component while the interfaces between the components show local zig-zag feature, the latter indicating variations in relative growth velocity of the two components. The pyramid-like intergrowth components are larger and come closer to one another in the middle of the crystal than at the edges, but they do not connect. A model of multisite nucleation and growth of 90 degrees intergrowth components is proposed. |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Language |
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Wos |
000392487400004 |
Publication Date |
2016-08-19 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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| |
ISSN |
0022-2720 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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| |
Impact Factor |
1.692 |
Times cited |
4 |
Open Access |
OpenAccess |
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| |
Notes |
Fonds Wetenschappelijk Onderzoek, G.0603.10N ; |
Approved |
Most recent IF: 1.692 |
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| |
Call Number |
EMAT @ emat @ c:irua:141015 |
Serial |
4437 |
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| Permanent link to this record |
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Author |
Cautaerts, N.; Delville, R.; Schryvers, D. |
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Title |
ALPHABETA: a dedicated open-source tool for calculating TEM stage tilt angles |
Type |
A1 Journal article |
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Year |
2019 |
Publication |
Journal of microscopy |
Abbreviated Journal |
J Microsc-Oxford |
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| |
Volume |
273 |
Issue |
3 |
Pages |
189-198 |
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Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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Abstract |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Language |
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Wos |
000458426100004 |
Publication Date |
2018-12-24 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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| |
ISSN |
0022-2720 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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| |
Impact Factor |
1.692 |
Times cited |
2 |
Open Access |
Not_Open_Access |
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Notes |
ENGIE Ph.D. sponsorship, 2015-AC-007 – BSUEZ6900 ; |
Approved |
Most recent IF: 1.692 |
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| |
Call Number |
EMAT @ emat @UA @ admin @ c:irua:157474 |
Serial |
5163 |
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| Permanent link to this record |
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Author |
Teodorescu, V.S.; Mihailescu, I.N.; Gyorgy, E.; Luches, A.; Martino, M.; Nistor, L.C.; van Landuyt, J.; Hermann, J. |
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Title |
The study of a crater forming on the surface of a Ti target submitted to multipulse excimer laser irradiation under low pressure N2 |
Type |
A1 Journal article |
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Year |
1996 |
Publication |
Journal of modern optics |
Abbreviated Journal |
J Mod Optic |
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Volume |
43 |
Issue |
9 |
Pages |
1773-1784 |
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Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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Abstract |
A Ti target was submitted to laser ablation in low ambient pressure N-2. Electron microscopy examination of the cross-section of the crater zone forming on the Ti target, and XPS analyses, indicate that there is a small effect on the nitridation processes taking place on and in the vicinity of the target. The studies show a zone influenced by the multipulse laser treatment extending beneath the crater down to a depth of the same order of magnitude as the crater depth (i.e. similar to 10 mu m). In this zone, TiN could be identified as being present only in traces, while the whole zone exhibited a layer structure with differences in morphology and mechanical wear. |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
London |
Editor |
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Language |
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Wos |
A1996VF31900002 |
Publication Date |
2007-07-07 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0950-0340;1362-3044; |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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| |
Impact Factor |
1.008 |
Times cited |
11 |
Open Access |
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Notes |
|
Approved |
PHYSICS, APPLIED 47/145 Q2 # |
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| |
Call Number |
UA @ lucian @ c:irua:95238 |
Serial |
3594 |
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| Permanent link to this record |
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Author |
Michielsen, B.; Verlackt, C.; van der Veken, B.J.; Herrebout, W.A. |
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Title |
C-H\cdots X (X = S, P) hydrogen bonding : the complexes of halothane with dimethyl sulfide and trimethylphosphine |
Type |
A1 Journal article |
| |
Year |
2012 |
Publication |
Journal Of Molecular Structure |
Abbreviated Journal |
J Mol Struct |
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| |
Volume |
1023 |
Issue |
|
Pages |
90-95 |
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Keywords |
A1 Journal article; Electron Microscopy for Materials Science (EMAT); |
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Abstract |
The formation of CH⋯S and CH⋯P hydrogen bonded complexes of halothane, CHBrClCF3, with dimethyl sulfide(-d6) and trimethylphosphine(-d9) have been studied in solutions of liquid krypton using infrared and Raman spectroscopy. In the 1:1 complexes, the halothane CH stretching mode is found to be red-shifted by 43 cm−1 in the dimethyl sulfide complex, and by 63 cm−1 in the trimethylphosphine complex. The complexation enthalpies were derived and amount to −10.7(2) and −11.2(2) kJ mol−1 for the respective complexes. The experiments were supported by ab initio calculations and Monte Carlo simulations. The obtained data for the CH⋯S and CH⋯P hydrogen bonds is compared to that of corresponding CH⋯O and CH⋯N hydrogen bonds. |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
Amsterdam |
Editor |
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Language |
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Wos |
000308971900017 |
Publication Date |
2012-03-23 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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| |
ISSN |
0022-2860; |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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| |
Impact Factor |
1.753 |
Times cited |
21 |
Open Access |
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Notes |
|
Approved |
Most recent IF: 1.753; 2012 IF: 1.404 |
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| |
Call Number |
UA @ lucian @ c:irua:100917 |
Serial |
3519 |
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| Permanent link to this record |
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Author |
Ben Abdallah, M.A.; Bacchi, A.; Parisini, A.; Canossa, S.; Bergamonti, L.; Balestri, D.; Kamoun, S. |
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| |
Title |
Crystal structure, vibrational, electrical, optical and DFT study of C₂H₁0N₂(IO₃)₂.HIO₃ |
Type |
A1 Journal article |
| |
Year |
2020 |
Publication |
Journal Of Molecular Structure |
Abbreviated Journal |
J Mol Struct |
|
| |
Volume |
1215 |
Issue |
|
Pages |
128254-12 |
|
| |
Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
|
| |
Abstract |
The reinvestigation of the EDA-HIO3-H2O system using a different stoichiometric ratio gives rise to a new iodate salt C2H10N2(IO3)(2 center dot)HIO3 denoted as EBIMIA. In this study, we reported the structural properties of ethylenediammonium bis iodate mono iodic acid using X-ray powder and single crystal diffraction at room temperature. The Hirshfeld and the potential energy surface analysis reveal that I center dot center dot center dot O and N-H center dot center dot center dot O are the most noticeable interactions that took place inside the crystal and contribute to the cohesion and stability of the synthesized compound. The DSC measurement shows that this iodate salt undergoes two structural phase transitions, the first occurs at T = 290 K while the second occurs at T = 363 K. However, the dielectric analysis confirms only the second transition because it lies in the studied temperature domain 338-413K. Besides, the impedance data obey a circuit model consisting of a parallel combination of a bulk resistance and CPE. The frequency dispersion of the conductivity follows Jonscher's law and the charge carrier transport may be interpreted using the correlation barrier hopping mechanism (CBH). Finally, the electronic properties and the vibrational analysis of this novel iodate salt are studied using DFT and compared to the experimental data given by the FT-IR, Raman and UV-visible spectroscopies. (C) 2020 Elsevier B.V. All rights reserved. |
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Address |
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Corporate Author |
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Thesis |
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| |
Publisher |
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Place of Publication |
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Editor |
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| |
Language |
|
Wos |
000537221300012 |
Publication Date |
2020-04-16 |
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| |
Series Editor |
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Series Title |
|
Abbreviated Series Title |
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| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
0022-2860 |
ISBN |
|
Additional Links |
UA library record; WoS full record |
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| |
Impact Factor |
3.8 |
Times cited |
|
Open Access |
OpenAccess |
|
| |
Notes |
; The authors are grateful to Pr. Giovani Predieri, Pr. Pier Paolo Lottici, and Pr. Danilo Bersani, for their help with the vibrational measurement. Moreover, authors wish to thank, Pr. Salvatore Vantaggio and Dr. Silvio Scaravonati for their contribution in carrying out the impedance spectroscopy measurements. The authors acknowledge also the Analytical Chemistry, Cultural Heritage, Inorganic Chemistry and Crystallography Unit (SCVSA department, university of Parma, Italy) and the Tunisian Ministry of Higher Education and Scientific Research (LR11ES46) for their support. ; |
Approved |
Most recent IF: 3.8; 2020 IF: 1.753 |
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| |
Call Number |
UA @ admin @ c:irua:170148 |
Serial |
6480 |
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| Permanent link to this record |
| |
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| |
|
Author |
Kelchtermans, A.; Adriaensens, P.; Slocombe, D.; Kuznetsov, V.L.; Hadermann, J.; Riskin, A.; Elen, K.; Edwards, P.P.; Hardy, A.; Van Bael, M.K. |
|
| |
Title |
Increasing the solubility limit for tetrahedral aluminium in ZnO:Al nanorods by variation in synthesis parameters |
Type |
A1 Journal article |
| |
Year |
2015 |
Publication |
Journal of nanomaterials |
Abbreviated Journal |
J Nanomater |
|
| |
Volume |
2015 |
Issue |
2015 |
Pages |
1-8 |
|
| |
Keywords |
A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT) |
|
| |
Abstract |
Nanocrystalline ZnO:Al nanoparticles are suitable building blocks for transparent conductive layers. As the concentration of substitutional tetrahedral Al is an important factor for improving conductivity, here we aim to increase the fraction of substitutional Al. To this end, synthesis parameters of a solvothermal reaction yielding ZnO:Al nanorods were varied. A unique set of complementary techniques was combined to reveal the exact position of the aluminium ions in the ZnO lattice and demonstrated its importance in order to evaluate the potential of ZnO:Al nanocrystals as optimal building blocks for solution deposited transparent conductive oxide layers. Both an extension of the solvothermal reaction time and stirring during solvothermal treatment result in a higher total tetrahedral aluminium content in the ZnO lattice. However, only the longer solvothermal treatment effectively results in an increase of the substitutional positions aimed for. |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
New York, N.Y. |
Editor |
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| |
Language |
|
Wos |
000358516300001 |
Publication Date |
2015-07-12 |
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| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
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| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
1687-4110;1687-4129; |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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| |
Impact Factor |
1.871 |
Times cited |
2 |
Open Access |
|
|
| |
Notes |
FWO; Methusalem |
Approved |
Most recent IF: 1.871; 2015 IF: 1.644 |
|
| |
Call Number |
c:irua:124426 |
Serial |
1600 |
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| Permanent link to this record |
| |
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| |
|
Author |
Joutsensaari, J.; Ahonen, P.P.; Kauppinen, E.I.; Brown, D.P.; Lehtinen, K.E.J.; Jokiniemi, J.K.; Pauwels, B.; Van Tendeloo, G. |
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| |
Title |
Aerosol synthesis of fullerene nanocrystals in controlled flow reactor conditions |
Type |
A1 Journal article |
| |
Year |
2000 |
Publication |
Journal of nanoparticle research |
Abbreviated Journal |
J Nanopart Res |
|
| |
Volume |
2 |
Issue |
1 |
Pages |
53-74 |
|
| |
Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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| |
Abstract |
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| |
Address |
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| |
Corporate Author |
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Thesis |
|
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| |
Publisher |
|
Place of Publication |
S.l. |
Editor |
|
|
| |
Language |
|
Wos |
000208067100007 |
Publication Date |
0000-00-00 |
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| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
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| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
1388-0764 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
|
| |
Impact Factor |
2.02 |
Times cited |
5 |
Open Access |
|
|
| |
Notes |
|
Approved |
Most recent IF: 2.02; 2000 IF: NA |
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| |
Call Number |
UA @ lucian @ c:irua:54748 |
Serial |
79 |
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| Permanent link to this record |
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| |
|
Author |
Turner, S.; Tavernier, S.M.F.; Huyberechts, G.; Bals, S.; Batenburg, K.J.; Van Tendeloo, G. |
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| |
Title |
Assisted spray pyrolysis production and characterisation of ZnO nanoparticles with narrow size distribution |
Type |
A1 Journal article |
| |
Year |
2010 |
Publication |
Journal of nanoparticle research |
Abbreviated Journal |
J Nanopart Res |
|
| |
Volume |
12 |
Issue |
2 |
Pages |
615-622 |
|
| |
Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT); Vision lab |
|
| |
Abstract |
Nano-sized ZnO particles with a narrow size distribution and high crystallinity were prepared from aqueous solutions with high concentrations of Zn2+ containing salts and citric acid in a conventional spray pyrolysis setup. Structure, morphology and size of the produced material were compared to ZnO material produced by simple spray pyrolysis of zinc nitrates in the same experimental setup. Using transmission electron microscopy and electron tomography it has been shown that citric acid-assisted spray pyrolysed material is made up of micron sized secondary particles comprising a shell of lightly agglomerated, monocrystalline primary ZnO nanoparticles with sizes in the 2030 nm range, separable by a simple ultrasonic treatment step. |
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Address |
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Corporate Author |
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Thesis |
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| |
Publisher |
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Place of Publication |
S.l. |
Editor |
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| |
Language |
|
Wos |
000275318700025 |
Publication Date |
2009-04-20 |
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| |
Series Editor |
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Series Title |
|
Abbreviated Series Title |
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| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
1388-0764;1572-896X; |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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| |
Impact Factor |
2.02 |
Times cited |
27 |
Open Access |
|
|
| |
Notes |
Esteem 026019 |
Approved |
Most recent IF: 2.02; 2010 IF: 3.253 |
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| |
Call Number |
UA @ lucian @ c:irua:81771 |
Serial |
156 |
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| Permanent link to this record |
| |
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| |
|
Author |
de Witte, K.; Cool, P.; de Witte, I.; Ruys, L.; Rao, J.; Van Tendeloo, G.; Vansant, E.F. |
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| |
Title |
Multistep loading of titania nanoparticles in the mesopores of SBA-15 for enhanced photocatalytic activity |
Type |
A1 Journal article |
| |
Year |
2007 |
Publication |
Journal of nanoscience and nanotechnology |
Abbreviated Journal |
J Nanosci Nanotechno |
|
| |
Volume |
7 |
Issue |
7 |
Pages |
2511-2515 |
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| |
Keywords |
A1 Journal article; Laboratory of adsorption and catalysis (LADCA); Electron microscopy for materials research (EMAT) |
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Abstract |
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| |
Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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| |
Language |
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Wos |
000246347700042 |
Publication Date |
2007-04-05 |
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| |
Series Editor |
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Series Title |
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Abbreviated Series Title |
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| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
1533-4880;0000-0000; |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
|
| |
Impact Factor |
1.483 |
Times cited |
13 |
Open Access |
|
|
| |
Notes |
|
Approved |
Most recent IF: 1.483; 2007 IF: 1.987 |
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| |
Call Number |
UA @ lucian @ c:irua:64773 |
Serial |
2240 |
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| Permanent link to this record |
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| |
|
Author |
Vishwakarma, M.; Karakulina, O.M.; Abakumov, A.M.; Hadermann, J.; Mehta, B.R. |
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| |
Title |
Nanoscale Characterization of Growth of Secondary Phases in Off-Stoichiometric CZTS Thin Films |
Type |
A1 Journal article |
| |
Year |
2018 |
Publication |
Journal of nanoscience and nanotechnology |
Abbreviated Journal |
J Nanosci Nanotechno |
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| |
Volume |
18 |
Issue |
3 |
Pages |
1688-1695 |
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| |
Keywords |
A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT) |
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| |
Abstract |
The presence of secondary phases is one of the main issues that hinder the growth of pure kesterite Cu2ZnSnS4 (CZTS) based thin films with suitable electronic and junction properties for efficient solar cell devices. In this work, CZTS thin films with varied Zn and Sn content have been prepared by RF-power controlled co-sputtering deposition using Cu, ZnS and SnS targets and a subsequent sulphurization step. Detailed TEM investigations show that the film shows a layered structure with the majority of the top layer being the kesterite phase. Depending on the initial thin film composition, either about ~1 μm Cu-rich and Zn-poor kesterite or stoichiometric CZTS is formed as top layer. X-ray diffraction, Raman spectroscopy and transmission electron microscopy reveal the presence of Cu2−x S, ZnS and SnO2 minor secondary phases in the form of nanoinclusions or nanoparticles or intermediate layers. |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Language |
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Wos |
000426033400022 |
Publication Date |
2018-03-01 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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| |
Series Volume |
|
Series Issue |
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Edition |
|
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| |
ISSN |
1533-4880 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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| |
Impact Factor |
1.483 |
Times cited |
|
Open Access |
Not_Open_Access |
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| |
Notes |
Manoj Vishwakarma acknowl- edges IIT Delhi for MHRD fellowship. Professor B. R. Mehta acknowledges the support of the Schlumberger chair professorship. Manoj Vishwakarma, Joke Hadermann and Olesia M. karakulina acknowledge support provided by InsoL-DST. Manoj Vishwakarma acknowledges sup- port provided by CSIR funded projects and the support of DST-FIST Raman facility. References |
Approved |
Most recent IF: 1.483 |
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| |
Call Number |
EMAT @ emat @c:irua:147505 |
Serial |
4775 |
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| Permanent link to this record |
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| |
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Author |
Nistor, L.C.; van Landuyt, J.; Barton, J.D.; Hole, D.E.; Skelland, N.D.; Townsend, P.D. |
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| |
Title |
Colloid size distributions in ion implanted glass |
Type |
A1 Journal article |
| |
Year |
1993 |
Publication |
Journal of non-crystalline solids |
Abbreviated Journal |
J Non-Cryst Solids |
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| |
Volume |
162 |
Issue |
|
Pages |
217-224 |
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| |
Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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Abstract |
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Address |
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Corporate Author |
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Thesis |
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| |
Publisher |
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Place of Publication |
Amsterdam |
Editor |
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| |
Language |
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Wos |
A1993LY37100002 |
Publication Date |
2003-06-21 |
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| |
Series Editor |
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Series Title |
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Abbreviated Series Title |
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| |
Series Volume |
|
Series Issue |
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Edition |
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| |
ISSN |
0022-3093; |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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| |
Impact Factor |
1.766 |
Times cited |
63 |
Open Access |
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| |
Notes |
|
Approved |
INSTRUMENTS & INSTRUMENTATION 31/56 Q3 # NUCLEAR SCIENCE & TECHNOLOGY 9/32 Q2 # PHYSICS, PARTICLES & FIELDS 24/28 Q4 # SPECTROSCOPY 28/43 Q3 # |
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| |
Call Number |
UA @ lucian @ c:irua:6787 |
Serial |
389 |
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| Permanent link to this record |
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| |
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Author |
Hole, D.E.; Townsend, P.D.; Barton, J.D.; Nistor, L.C.; van Landuyt, J. |
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| |
Title |
Gallium colloid formation during ion implantation of glass |
Type |
A1 Journal article |
| |
Year |
1995 |
Publication |
Journal of non-crystalline solids |
Abbreviated Journal |
J Non-Cryst Solids |
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| |
Volume |
180 |
Issue |
|
Pages |
266-274 |
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| |
Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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Abstract |
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| |
Address |
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Corporate Author |
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Thesis |
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| |
Publisher |
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Place of Publication |
Amsterdam |
Editor |
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| |
Language |
|
Wos |
A1995QB59400018 |
Publication Date |
2002-07-25 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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| |
Series Volume |
|
Series Issue |
|
Edition |
|
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| |
ISSN |
0022-3093; |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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| |
Impact Factor |
1.766 |
Times cited |
34 |
Open Access |
|
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| |
Notes |
|
Approved |
PHYSICS, APPLIED 28/145 Q1 # |
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| |
Call Number |
UA @ lucian @ c:irua:13288 |
Serial |
1313 |
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| Permanent link to this record |
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Author |
Boulay, E.; Ragoen, C.; Idrissi, H.; Schryvers, D.; Godet, S. |
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| |
Title |
Influence of amorphous phase separation on the crystallization behavior of glass-ceramics in the BaO-TiO2-SiO2 system |
Type |
A1 Journal article |
| |
Year |
2014 |
Publication |
Journal of non-crystalline solids |
Abbreviated Journal |
J Non-Cryst Solids |
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| |
Volume |
384 |
Issue |
|
Pages |
61-72 |
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| |
Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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| |
Abstract |
The possible role of a prior amorphous phase separation on the subsequent crystallization has been the topic of vigorous debates over the last decades and has not yet been clarified, especially regarding the role of the interfaces created by the phase separation. This study proposes to focus on the interplay between a prior amorphous phase separation and the crystallization of fresnoite in the BaO-TiO2-SiO2 system. The crystallization behavior of a non-stoichiometric composition inside the miscibility gap (called APS) is compared with the stoichiometric composition (called FRES) and a non-stoichiometric composition outside the miscibility gap (called NoAPS). The crystallization mechanisms are compared using differential thermal analysis (DTA) by calculating the Avrami parameters and the activation energies as a function of the particle size. The DTA study shows that the two non-stoichiometric compositions exhibit a pronounced surface crystallization behavior whereas FRES undergoes bulk nucleation. This is supported by a multi-scale microstructure characterization. Furthermore, this study demonstrates that the amorphous phase separation and the associated interfaces do not play any significant role in the nucleation step. Moreover, transmission electron microscope (TEM) and local orientation measurements show that the growth of the dendrites is not hindered by the SiO2-rich droplets. The final stage of crystallization of APS is tentatively explained by two composition effects that must be further investigated: the viscosity effect and the formation of a eutectic. (C) 2013 Elsevier B.V. All rights reserved. |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
Amsterdam |
Editor |
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| |
Language |
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Wos |
000329422400010 |
Publication Date |
2013-07-24 |
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| |
Series Editor |
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Series Title |
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Abbreviated Series Title |
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| |
Series Volume |
|
Series Issue |
|
Edition |
|
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| |
ISSN |
0022-3093; |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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| |
Impact Factor |
2.124 |
Times cited |
10 |
Open Access |
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| |
Notes |
|
Approved |
Most recent IF: 2.124; 2014 IF: 1.766 |
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| |
Call Number |
UA @ lucian @ c:irua:114782 |
Serial |
1614 |
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| Permanent link to this record |
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Author |
Liu, S.; Rao, J.; Sui, X.; Cool, P.; Vansant, E.F.; Van Tendeloo, G.; Cheng, X. |
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| |
Title |
Preparation of hollow silica spheres with different mesostructures |
Type |
A1 Journal article |
| |
Year |
2008 |
Publication |
Journal of non-crystalline solids |
Abbreviated Journal |
J Non-Cryst Solids |
|
| |
Volume |
354 |
Issue |
10/11 |
Pages |
826-830 |
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| |
Keywords |
A1 Journal article; Laboratory of adsorption and catalysis (LADCA); Electron microscopy for materials research (EMAT) |
|
| |
Abstract |
Hollow silica spheres were quickly synthesized by an octylamine (OA) templating method using tetraethyl orthosilicate (TEOS) as the silica source. N2-sorption results indicate that the hollow spheres have high surface areas and pore volumes. XRD and TEM measurements reveal that the structure of the hollow spheres depends on the amount of TEOS used in the synthesis. When low amount of TEOS is added, the template-containing precursor spheres depict an XRD pattern with two peaks, which can be indexed to a lamellar phase. After the removal of the template, the obtained hollow spheres show no diffraction peaks in the XRD pattern, suggesting that the nanopores in the silica shells are disordered. If increasing the amount of TEOS, either the uncalcined or the calcined sample gives an XRD pattern with a single diffraction peak. The mesostructure of these hollow silica spheres is typically as HMS materials. TGA analyses suggest that the interaction between the silica species and surfactant is stronger in the latter case. |
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Address |
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Corporate Author |
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Thesis |
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| |
Publisher |
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Place of Publication |
Amsterdam |
Editor |
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| |
Language |
|
Wos |
000253216700003 |
Publication Date |
2007-09-17 |
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| |
Series Editor |
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Series Title |
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Abbreviated Series Title |
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| |
Series Volume |
|
Series Issue |
|
Edition |
|
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| |
ISSN |
0022-3093; |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
|
| |
Impact Factor |
2.124 |
Times cited |
26 |
Open Access |
|
|
| |
Notes |
Gao |
Approved |
Most recent IF: 2.124; 2008 IF: 1.449 |
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| |
Call Number |
UA @ lucian @ c:irua:72018 |
Serial |
2703 |
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| Permanent link to this record |
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| |
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Author |
Lambrinou, K.; Charalampopoulou, E.; Van der Donck, T.; Delville, R.; Schryvers, D. |
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| |
Title |
Dissolution corrosion of 316L austenitic stainless steels in contact with static liquid lead-bismuth eutectic (LBE) at 500 °C |
Type |
A1 Journal article |
| |
Year |
2017 |
Publication |
Journal of nuclear materials |
Abbreviated Journal |
J Nucl Mater |
|
| |
Volume |
490 |
Issue |
490 |
Pages |
9-27 |
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| |
Keywords |
A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT) |
|
| |
Abstract |
This work addresses the dissolution corrosion behaviour of 316L austenitic stainless steels. For this purpose, solution-annealed and cold-deformed 316L steels were simultaneously exposed to oxygen-poor (<10-8 mass%) static liquid lead-bismuth eutectic (LBE) for 253e3282 h at 500 °C. Corrosion was consistently more severe for the cold-drawn steels than the solution-annealed steel, indicating the importance of the steel thermomechanical state. The thickness of the dissolution-affected zone was nonuniform, and sites of locally-enhanced dissolution were occasionally observed. The progress of LBE dissolution attack was promoted by the interplay of certain steel microstructural features (grain boundaries, deformation twin laths, precipitates) with the dissolution corrosion process. The identified dissolution mechanisms were selective leaching leading to steel ferritization, and non-selective leaching; the latter was mainly observed in the solution-annealed steel. The maximum corrosion rate decreased with exposure time and was found to be inversely proportional to the depth of dissolution attack. |
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Address |
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Corporate Author |
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Thesis |
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| |
Publisher |
|
Place of Publication |
|
Editor |
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| |
Language |
|
Wos |
000403132300002 |
Publication Date |
2017-04-10 |
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| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
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| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
0022-3115 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
|
| |
Impact Factor |
2.048 |
Times cited |
24 |
Open Access |
OpenAccess |
|
| |
Notes |
The authors would like to acknowledge the following 316L stainless steel suppliers: Industeel, ArcelorMittal Group, for the 316LSA plate procured and characterised in the FP6 EUROTRANSDEMETRA project (Contract no. FI6W-CT-2004-516520); OLARRA Aceros Inoxidables, Spain, for the 316LH1 rod; and SIDERO STAAL nv, Belgium, for the 316LH2 rod. K. Lambrinou would like to thank J. Joris for technical support during the launching and follow up of all corrosion tests, J. Lim for the manufacturing and calibration of the oxygen sensors used in these tests, T. Lapauw for the XRD measurements on the pristine steels, and S. Van den Broeck for the FIB sample preparation. Special thanks to S. Gavrilov for fruitful and intense discussions. The authors gratefully acknowledge the funding provided in the framework of the ongoing development of the MYRRHA irradiation facility. The research leading to these results falls within the framework of the European Energy Research Alliance Joint Programme on Nuclear Materials (EERA JPNM). |
Approved |
Most recent IF: 2.048 |
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| |
Call Number |
EMAT @ emat @ c:irua:142644 |
Serial |
4563 |
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| Permanent link to this record |
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| |
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Author |
Cautaerts, N.; Delville, R.; Dietz, W.; Verwerft, M. |
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| |
Title |
Thermal creep properties of Ti-stabilized DIN 1.4970 (15-15Ti) austenitic stainless steel pressurized cladding tubes |
Type |
A1 Journal article |
| |
Year |
2017 |
Publication |
Journal of nuclear materials |
Abbreviated Journal |
J Nucl Mater |
|
| |
Volume |
493 |
Issue |
|
Pages |
154-167 |
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| |
Keywords |
A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT) |
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| |
Abstract |
This paper presents a large database of thermal creep data from pressurized unirradiated DIN 1.4970 Ti-stabilized austenitic stainless steel (i.e. EN 1515CrNiMoTiB or “15-15Ti”) cladding tubes from more than 1000 bi-axial creep tests conducted during the fast reactor R&D program of the DeBeNe (Deutschland-Belgium- Netherlands) consortium between the 1960's to the late 1980's. The data comprises creep rate and time-to-rupture between 600 and 750 degrees C and a large range of stresses. The data spans tests on material from around 70 different heats and 30 different melts. Around one fourth of the data was obtained from cold worked material, the rest was obtained on cold worked + aged (800 degrees C, 2 h) material. The data are graphically presented in log-log graphs. The creep rate data is fit with a sinh correlation, the time to rupture data is fit with a modified exponential function through the Larson-Miller parameter. Local equivalent parameters to Norton's law are calculated and compared to literature values for these types of steels and related to possible creep mechanisms. Some time to rupture data above 950 degrees C is compared to literature dynamic recrystallization data. Time to rupture data between 600 and 750 degrees C is also compared to literature data from 316 steel. Time to rupture was correlated directly to creep rate with the Monkman-Grant relationship at different temperatures. (C) 2017 Elsevier B.V. All rights reserved. |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
Amsterdam |
Editor |
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| |
Language |
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Wos |
000408044000018 |
Publication Date |
2017-06-11 |
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| |
Series Editor |
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Series Title |
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Abbreviated Series Title |
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| |
Series Volume |
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Series Issue |
|
Edition |
|
|
| |
ISSN |
0022-3115 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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| |
Impact Factor |
2.048 |
Times cited |
5 |
Open Access |
OpenAccess |
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| |
Notes |
; ; |
Approved |
Most recent IF: 2.048 |
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| |
Call Number |
UA @ lucian @ c:irua:145686 |
Serial |
4753 |
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| Permanent link to this record |
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| |
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Author |
Cautaerts, N.; Delville, R.; Stergar, E.; Schryvers, D.; Verwerft, M. |
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| |
Title |
Tailoring the Ti-C nanoprecipitate population and microstructure of titanium stabilized austenitic steels |
Type |
A1 Journal article |
| |
Year |
2018 |
Publication |
Journal of nuclear materials |
Abbreviated Journal |
J Nucl Mater |
|
| |
Volume |
507 |
Issue |
507 |
Pages |
177-187 |
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| |
Keywords |
A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT) |
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| |
Abstract |
The present work reports on the microstructural evolution of a new heat of 24% cold worked austenitic DIN 1.4970 (15-15Ti) nuclear cladding steel subjected to ageing heat treatments of varying duration between 500 and 800 degrees C (by steps of 100 degrees C). The primary aim was studying the finely dispersed Ti-C nanoprecipitate population, which are thought to be beneficial for creep and swelling resistance during service. Their size distribution and number density were estimated through dark field imaging and bright field Moire imaging techniques in the transmission electron microscope. Nanoprecipitates formed at and above 600 degrees C, which is a lower temperature than previously reported. The observed nucleation, growth and coarsening behavior of the nanoprecipitates were consistent with simple diffusion arguments. The formation of nanoprecipitates coincided with significant dissociation of dislocations as evidenced by weak beam dark field imaging. Possible mechanisms, including Silcock's stacking fault growth model and Suzuki segregation, are discussed. Recrystallization observed after extended ageing at 800 degrees C caused the redissolution of nanoprecipitates. Large primary Ti(C,N) and (Ti,Mo)C precipitates that occur in the as-received material, and M23C6 precipitates that nucleate on grain boundaries at low temperatures were also characterized by a selective dissolution procedure involving filtration, X-ray diffraction and quantitative Rietveld refinement. The partitioning of key elements between the different phases was derived by combining these findings and was consistent with thermodynamic considerations and the processing history of the steel. (C) 2018 Elsevier B.V. All rights reserved. |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
Amsterdam |
Editor |
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| |
Language |
|
Wos |
000438019800021 |
Publication Date |
2018-04-30 |
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| |
Series Editor |
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Series Title |
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Abbreviated Series Title |
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| |
Series Volume |
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Series Issue |
|
Edition |
|
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| |
ISSN |
0022-3115 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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| |
Impact Factor |
2.048 |
Times cited |
1 |
Open Access |
Not_Open_Access |
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| |
Notes |
; We would like to acknowledge ENGIE, SCK.CEN, the SCK.CEN academy and the MYRRHA project for the financial support of this work. Special thanks to T. Wangle and P. Dries for their help with filtration and gravimetry. Also thanks to Dr. G. Leinders for the discussions on XRD and Rietveld refinement. Thanks to E. Charalampopoulou and A. Youssef for assisting with the dissolution experiments. ; |
Approved |
Most recent IF: 2.048 |
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| |
Call Number |
UA @ lucian @ c:irua:152382 |
Serial |
5043 |
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| Permanent link to this record |
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Author |
Caglak, E.; Govers, K.; Lamoen, D.; Labeau, P.-E.; Verwerft, M. |
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Title |
Atomic scale analysis of defect clustering and predictions of their concentrations in UO2+x |
Type |
A1 Journal article |
| |
Year |
2020 |
Publication |
Journal Of Nuclear Materials |
Abbreviated Journal |
J Nucl Mater |
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| |
Volume |
541 |
Issue |
|
Pages |
152403 |
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| |
Keywords |
A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT) |
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| |
Abstract |
The physical properties of uranium dioxide vary greatly with stoichiometry. Oxidation towards hyperstoichiometric UO2 – UO2+x – might be encountered at various stages of the nuclear fuel cycle if oxidative conditions are met; the impact of stoichiometry changes upon physical properties should therefore be properly assessed to ensure safe and reliable operations. These physical properties are intimately linked to the arrangement of atomic defects in the crystalline structure. The evolution of the defect concentration with environmental parameters – oxygen partial pressure and temperature – were evaluated by means of a point defect model where the reaction energies are derived from atomic-scale simulations. To this end, various configurations and net charge states of oxygen interstitial clusters in UO2 have been calculated. Various methodologies have been tested to determine the optimum cluster configurations and a rigid lattice approach turned out to be the most useful strategy to optimize defect configuration structures. Ultimately, results from the point defect model were discussed and compared to experimental measurements of stoichiometry dependence on oxygen partial pressure and temperature. |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Language |
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Wos |
000575165800006 |
Publication Date |
2020-08-06 |
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Series Editor |
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Series Title |
|
Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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| |
ISSN |
0022-3115 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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| |
Impact Factor |
3.1 |
Times cited |
|
Open Access |
OpenAccess |
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| |
Notes |
This work is dedicated to the memory of Prof. Alain Dubus, ULB, Bruxelles, Belgium. Financial support from the SCK CEN is gratefully acknowledged. |
Approved |
Most recent IF: 3.1; 2020 IF: 2.048 |
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| |
Call Number |
EMAT @ emat @c:irua:172464 |
Serial |
6402 |
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| Permanent link to this record |
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Author |
Penders, A.G.; Konstantinovic, M.J.; Yang, T.; Bosch, R.-w.; Schryvers, D.; Somville, F. |
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Title |
Microstructural investigation of IASCC crack tips extracted from thimble tube O-ring specimens |
Type |
A1 Journal article |
| |
Year |
2022 |
Publication |
Journal of nuclear materials |
Abbreviated Journal |
J Nucl Mater |
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| |
Volume |
565 |
Issue |
|
Pages |
153727-16 |
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Keywords |
A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT) |
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Abstract |
The microstructural features of intergranular irradiation-assisted stress corrosion crack tips from a redeemed neutron-irradiated flux thimble tube (60 dpa) have been investigated using focused-ion beam analysis and (scanning) transmission electron microscopy. The current work presents a close examination of the deformation field and oxide assembly associated with intergranular cracking, in addition to the analysis of radiation-induced segregation at leading grain boundaries. Evidence of stress induced martensitic transformation extending from the crack tips is presented. Intergranular crack arrest is demonstrated on the account of the external tensile stress orientation, and as a consequence of MnS inclusion particles segregating close to the fractured grain boundary. Exclusive observations of grain boundary oxidation prior to the cracking are presented, which is in full-agreement with the internal oxidation model.(c) 2022 Elsevier B.V. All rights reserved. |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Language |
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Wos |
000799256300004 |
Publication Date |
2022-04-11 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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| |
ISSN |
0022-3115 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
3.1 |
Times cited |
|
Open Access |
OpenAccess |
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Notes |
|
Approved |
Most recent IF: 3.1 |
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| |
Call Number |
UA @ admin @ c:irua:188609 |
Serial |
7086 |
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| Permanent link to this record |
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Author |
Penders, A.G.; Konstantinović, M.J.; Van Renterghem, W.; Bosch, R.-W.; Schryvers, D.; Somville, F. |
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Title |
Characterization of IASCC crack tips extracted from neutron-irradiated flux thimble tube specimens in view of a probabilistic fracture model |
Type |
A1 Journal article |
| |
Year |
2022 |
Publication |
Journal of nuclear materials |
Abbreviated Journal |
J Nucl Mater |
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| |
Volume |
571 |
Issue |
|
Pages |
154015-154016 |
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Keywords |
A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT) |
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Abstract |
This study reports the properties of irradiation assisted stress corrosion crack tips extracted by means of focused-ion beam from 60 to 80 dpa neutron-irradiated O-ring specimens tested under straining conditions under a pressurized-water reactor environment. Various crack tip morphologies and surrounding deformation features were analyzed as a function of applied stress, surface oxidation state and loading form – constant versus cyclic. All investigated cracks exhibit grain boundary oxidation in front of the crack tip, with the extent of oxidation being proportional to applied stress. These findings clearly demonstrate that, under the subcritical crack propagation regime, the grain boundary oxide grows faster than the crack. On the other hand, crack tips appertaining to specimens with removed oxide layer at the outer surface show comparatively less oxidation at the crack tip, which could indicate towards crack initiation from regions that exemplify lower stress, such as the O-ring inner surface. Cyclic loading is found to have a more pronounced effect on the crack tip microstructure, demonstrating increased deformation twinning and -martensitic transformation, which signifies towards an increased susceptibility to intergranular failure. Still, the extent of crack tip grain boundary oxidation in this case agrees well with expected values for maximum stress applied during cyclic loading. All results are interpreted based on the probabilistic subcritical crack propagation mechanism and provide strong support to a stress-driven internal oxidation model. |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Language |
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Wos |
000872389200009 |
Publication Date |
2022-09-06 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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| |
ISSN |
0022-3115 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
3.1 |
Times cited |
|
Open Access |
OpenAccess |
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Notes |
|
Approved |
Most recent IF: 3.1 |
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| |
Call Number |
UA @ admin @ c:irua:190375 |
Serial |
7135 |
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| Permanent link to this record |
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Author |
Guzzinati, G.; Béché, A.; McGrouther, D.; Verbeeck, J. |
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Title |
Prospects for out-of-plane magnetic field measurements through interference of electron vortex modes in the TEM |
Type |
A1 Journal article |
| |
Year |
2019 |
Publication |
Journal of optics |
Abbreviated Journal |
J Optics-Uk |
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| |
Volume |
21 |
Issue |
12 |
Pages |
124002 |
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Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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| |
Abstract |
Magnetic field mapping in transmission electron microscopy is commonplace, but all conventional methods provide only a projection of the components of the magnetic induction perpendicular to the electron trajectory. Recent experimental advances with electron vortices have shown that it is possible to map the out of plane magnetic induction in a TEM setup via interferometry with a specifically prepared electron vortex state carrying high orbital angular momentum (OAM). The method relies on the Aharonov?Bohm phase shift that the electron undergoes when going through a longitudinal field. Here we show how the same effect naturally occurs for any electron wave function, which can always be described as a superposition of OAM modes. This leads to a clear connection between the occurrence of high-OAM partial waves and the amount of azimuthal rotation in the far field angular distribution of the beam. We show that out of plane magnetic field measurement can thus be obtained with a much simpler setup consisting of a ring-like aperture with azimuthal spokes. We demonstrate the experimental setup and explore the achievable sensitivity of the magnetic field measurement. |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Language |
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Wos |
000499367800001 |
Publication Date |
2019-10-28 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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| |
ISSN |
2040-8978 |
ISBN |
|
Additional Links |
UA library record; WoS full record; WoS citing articles |
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| |
Impact Factor |
1.741 |
Times cited |
3 |
Open Access |
|
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| |
Notes |
The authors thank V Grillo and T Harvey for interesting and fruitful discussion. GG acknowledges support from a postdoctoral fellow-ship grant from the Fonds Wetenschappelijk Onderzoek – Vlaanderen (FWO). The Qu-Ant-EM microscope was partly funded by the Hercules fund from the Flemish Government. This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 823717 – ESTEEM3. AB acknowledges funding from FWO project G093417N ('Compressed sensing enabling low dose imaging in transmission electron microscopy'). DM gratefully acknowledges funding of the FEBID capability through joint funding by University of Glasgow & EPSRC through a Strategic Equipment Grant (EP/P001483/1). |
Approved |
Most recent IF: 1.741 |
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| |
Call Number |
UA @ admin @ c:irua:165116 |
Serial |
6319 |
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| Permanent link to this record |
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Author |
Ghica, C.; Enculescu, I.; Nistor, L.C.; Matei, E.; Van Tendeloo, G. |
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Title |
Electrochemical growth and characterization of nanostructured ZnO thin films |
Type |
A1 Journal article |
| |
Year |
2008 |
Publication |
Journal of optoelectronics and advanced materials |
Abbreviated Journal |
J Optoelectron Adv M |
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Volume |
10 |
Issue |
12 |
Pages |
3237-3240 |
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Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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| |
Abstract |
ZnO is a wide band-gap (ca. 3.4 eV) semiconductor, piezoelectric, pyroelectric, biocompatible, transparent in the visible spectrum and UV light emitting material. The fabrication in 2001 of the first nanobelts of semiconductor oxide materials lead to a rapid expansion of researches concerning one dimensional nanostructures (nanotubes, nanowires, nanobelts), given their possible application in optics, optoelectronics, piezoelectricity, catalysis. Researches carried on up to date evidenced the possibility to obtain an extraordinary variety of ZnO nanostructures, in function of the experimental parameters and the used growth methods. In this work we present morphostructural results on nanostructured ZnO layers obtained by electrochemical deposition. The films have been grown on gold covered glass plates and Si wafers, in various experimental conditions such as: nature of the wetting agents, electrical polarization of the substrate (continuous, pulsed). The influence of the growth conditions on the crystalline structure and morphology of the films is revealed by scanning and transmission electron microscopy studies. The films show a variety of growth morphologies, from entangled-wires-like to honeycomb-like layers. These large-specific-surface layers will be tested as nanostructured substrates for photovoltaic cells with improved efficiency. |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
Bucharest |
Editor |
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Language |
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Wos |
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Publication Date |
0000-00-00 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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| |
ISSN |
1454-4164 |
ISBN |
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Additional Links |
UA library record; WoS full record; |
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Impact Factor |
0.449 |
Times cited |
|
Open Access |
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Notes |
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Approved |
Most recent IF: 0.449; 2008 IF: 0.577 |
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Call Number |
UA @ lucian @ c:irua:75746 |
Serial |
899 |
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| Permanent link to this record |
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Author |
Ghica, C.; Nistor, L.; Van Tendeloo, G. |
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Title |
Revealing nanoscale structural TEM/HRTEM: application on ferroelectric ordering by PMN-PT relaxor ferroelectric |
Type |
A1 Journal article |
| |
Year |
2008 |
Publication |
Journal of optoelectronics and advanced materials |
Abbreviated Journal |
J Optoelectron Adv M |
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| |
Volume |
10 |
Issue |
9 |
Pages |
2328-2333 |
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Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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Abstract |
Nano-scale ordering may be revealed in transmission electron microscopy (TEM) by at least three techniques that will be presented in this work: selected area electron diffraction, conventional TEM and high-resolution TEM. Digital image processing is used to extract additional information from the high-resolution micrographs. The described methods are illustrated in a microstructural and compositional study of a 90%Pb(Mg1/3Nb2/3)O-3-10%PbTiO2 ceramic sample. High-resolution images reveal the presence of ordered compositional nano-domains, observable in two specific crystallographic orientations. Antiphase boundaries lying in the (111) planes separate them, while (100) and (111) facets separate the ordered domains from the disordered matrix. |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
Bucharest |
Editor |
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Language |
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Wos |
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Publication Date |
0000-00-00 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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| |
ISSN |
1454-4164 |
ISBN |
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Additional Links |
UA library record; WoS full record; |
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| |
Impact Factor |
0.449 |
Times cited |
|
Open Access |
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Notes |
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Approved |
Most recent IF: 0.449; 2008 IF: 0.577 |
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| |
Call Number |
UA @ lucian @ c:irua:76520 |
Serial |
2901 |
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| Permanent link to this record |
