Method of producing dense sintered silicon carbide body from polycarbosilane
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United States of America Patent
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Feb 22, 1983
Grant Date -
N/A
app pub date -
Jan 27, 1978
filing date -
Jan 27, 1977
priority date (Note) -
Expired
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Abstract
A method of producing a dense sintered silicon carbide body, which is high in flexural strength, purity and strength at an elevated temperature, from polycarbosilanes is disclosed. This method comprises the following steps of: A. polymerizing organosilicon compounds to obtain insoluble and unmeltable polycarbosilane of which the melting or softening temperature lies higher than its thermal decomposition temperature; B. grinding this insoluble and unmeltable polycarbosilane to powder; C. decomposing this powder thermally in the range of 600.degree. to 2200.degree. C. in a nonoxidizing atmosphere to obtain silicon carbide; D. molding this silicon carbide powder; and E. sintering the thus molded body in a nonoxidizing atmosphere.
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