Peculiarities of Silicon Nitride and Carbide Powder Synthesis
Abstract
The paper shows that temperature, burning rate and content of main substance bear a relationship to nitrogen pressure in a reactor, charge density, blank diameter, specific surface of initial silicon powder at synthesis of Si3N4-SiC powder composition. It has been shown that control of synthesis conditions makes it possible to obtain Si3N4-SiC powder of the given composition and particle structure. During the synthesis process high-tensile disperse oc-SiC particles, a and p Si3N4 particles of hexahedral and octahedral shape with a size of 0.02...0.2 microns, P-Si3N4 particles of irregular shape and a-Si3N4 particles as fibres have been formed.
About the Authors
V. N. Kovalevsky
Belarusian National Technical University
Belarus
Belarus
A. V. Kovalevskaya
Belarusian National Technical University
Belarus
Belarus
V. V. Pytko
Belarusian National Technical University
Belarus
Belarus
References
1. Технология, структурообразование и свойства керамических материалов на основе Si3N4-SiC / В. Н. Ковалевский, А. В. Ковалевская, Л. Ф. Керженцева // Материалы 51-й междунар. науч.-техн. конф. БГПА. - Мн., 1995. - Ч. 8. - С. 45-47.
2. Деформационные изменения в структуре Si3N4-SiC / В. Н. Ковалевский, А. В. Ковалевская, Л. Ф. Керженцева и др. // Новые материалы и технологии в металлургии и машиностроении. - Запорожье, 1998. - № 2. - С. 79-86.
3. А. с. 1525996 СССР. Способ получения керамического порошка / В. Н. Ковалевский и др. - 1990.
Review
For citations:
Kovalevsky V.N., Kovalevskaya A.V., Pytko V.V. Peculiarities of Silicon Nitride and Carbide Powder Synthesis. Science & Technique. 2003;(3):20-23. (In Russ.)
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