发明名称 |
Process for preparing silicon nitride powder |
摘要 |
Disclosed is a process for preparing silicon nitride powder, which comprises baking a powdery mixture comprising (i) 1 part by weight of silica powder, or a silica-containing substance in terms of silica, (ii) 0.4 to 4 parts by weight of carbon powder, or a substance generating carbon by baking, in terms of carbon and (iii) 0.005 to 1 part by weight of silicon nitride powder synthesized by a silica reduction method, at a temperature of from 1350 DEG to 1550 DEG C. in a non-oxidative atmosphere containing nitrogen.
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申请公布号 |
US4514370(A) |
申请公布日期 |
1985.04.30 |
申请号 |
US19840618524 |
申请日期 |
1984.06.08 |
申请人 |
TOKYO SHIBAURA DENKI KABUSHIKI KAISHA;TOSHIBA CERAMICS CO., LTD |
发明人 |
INOUE, HIROSHI;KOMEYA, KATSUTOSHI;TSUGE, AKIHIKO;KOIDE, KAZUNARI;MORI, MASAAKI;URAKAWA, TETSURO |
分类号 |
C01B21/068;(IPC1-7):C01B21/068 |
主分类号 |
C01B21/068 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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