PRODUCTION OF SILICON NITRIDE SINTERED BODY

摘要

PURPOSE:To obtain a silicon nitride sintered body suitable for use as a structural material at a part requiring heat resistance and high strength. CONSTITUTION:When a molded body consisting of silicon nitride powder with a silica coating film formed on at least the surface, silicon carbide powder and a sintering aid is sintered, the silica coating film is removed immediately before sintering and a silicon nitride sintered body is produced.