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Synthesis, Properties and Processing of Nanosized Silicon-Carbonitride Powders
Abstract Nanosized siliconcarbonitride powders have been synthesized by gas phase pyrolysis of evaporable precursors at temperatures between 600 – 1000 °C. Thereby different starting materials (disilazanes, oligosilazanes and mixtures thereof) have been used for the synthesis. The synthesized powders are obtained by hot wall reactor pyrolysis in reactive and inert gas stream. Chemical composition, surface and particle size distribution of powders is controlled by variation of the starting materials and the synthesis conditions. The dependence of the starting material on the content of free carbon has been investigated. Disilazanes reach a higher content of free carbon than cyclic oligosilazanes. The X-ray amorphous powders have been characterized after a heat treatment by various diagnostics (chemical analysis, BET, XRD, SEM and thermal analysis). During heat treatment the specific area of the pyrolyzed powders decrease and above 1400 °C crystallization is observed.
Synthesis, Properties and Processing of Nanosized Silicon-Carbonitride Powders
Abstract Nanosized siliconcarbonitride powders have been synthesized by gas phase pyrolysis of evaporable precursors at temperatures between 600 – 1000 °C. Thereby different starting materials (disilazanes, oligosilazanes and mixtures thereof) have been used for the synthesis. The synthesized powders are obtained by hot wall reactor pyrolysis in reactive and inert gas stream. Chemical composition, surface and particle size distribution of powders is controlled by variation of the starting materials and the synthesis conditions. The dependence of the starting material on the content of free carbon has been investigated. Disilazanes reach a higher content of free carbon than cyclic oligosilazanes. The X-ray amorphous powders have been characterized after a heat treatment by various diagnostics (chemical analysis, BET, XRD, SEM and thermal analysis). During heat treatment the specific area of the pyrolyzed powders decrease and above 1400 °C crystallization is observed.
Synthesis, Properties and Processing of Nanosized Silicon-Carbonitride Powders
Neumann, A. (author) / Boden, G. (author) / Friedrich, H. (author)
1997-01-01
6 pages
Article/Chapter (Book)
Electronic Resource
English
Free Carbon , Excellent High Temperature , Silicon Nitride Material , NANOSIZED Silicon , Reactive Ammonia Engineering , Industrial and Production Engineering , Materials Science, general , Ceramics, Glass, Composites, Natural Methods , Characterization and Evaluation of Materials , Inorganic Chemistry
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