Agglomeration of nano-MgAl2O4 spinel from microemulsion and CVD techniques
In: Proceedings of the XIth International Conference on Small-Angle ScatteringJournal of applied crystallography 33:507-510; Jg. 33 (2000) S. 507-510
Online
Konferenz
- print, 4 ref 3
Zugriff:
MgAl2O4 nanoparticles have been prepared using a microemulsion synthesis technique (ME) and a chemical vapour deposition (CVD) approach. In the wet-chemical route, the chain length of the surfactant molecules used to stabilise the microemulsion as well as the annealing conditions (temperature and time) after preparation were varied. For CVD samples, the influence of the target temperature and the consecutive annealing temperature were investigated. A pinhole small-angle X-ray scattering camera was employed to determine the size and size distribution of primary particles as well as agglomerates. ME material is primarily obtained in the form of amorphous non-agglomerated particles; CVD raw material is crystalline and agglomerated. Upon annealing, agglomerates of ME material form and then grow faster than the primary particles do; in CVD material the agglomerates do not grow. Agglomeration is suppressed if the CVD process is carried out at elevated target temperature.
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Agglomeration of nano-MgAl2O4 spinel from microemulsion and CVD techniques
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Autor/in / Beteiligte Person: | WINTER, R ; QUINTEN, M ; DIERSTEIN, A ; HEMPELMANN, R ; ALTHERR, A ; VEITH, M |
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Quelle: | Proceedings of the XIth International Conference on Small-Angle ScatteringJournal of applied crystallography 33:507-510; Jg. 33 (2000) S. 507-510 |
Veröffentlichung: | Oxford: Blackwell, 2000 |
Medientyp: | Konferenz |
Umfang: | print, 4 ref 3 |
ISSN: | 0021-8898 (print) |
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