Kyoto Ceramic Kabushiki Kaisha

Shinichiro Mizuta

Masayoshi Nakayama

Saburo Nagano

Kazunori Koga

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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Kyoto, Japan

Shinichiro Mizuta