发明授权
- 专利标题： Silicon nitride/silicon carbide composite densified materials prepared using composite powders
- 专利标题（中）： 使用复合粉末制备的氮化硅/碳化硅复合致密材料
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申请号： US678199申请日： 1996-07-12
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公开(公告)号： US5643843A公开(公告)日： 1997-07-01
- 发明人: Stephen D. Dunmead , Alan W. Weimer , Daniel F. Carroll , Glenn A. Eisman , Gene A. Cochran , David W. Susnitzky , Donald R. Beaman , Kevin J. Nilsen
- 申请人： Stephen D. Dunmead , Alan W. Weimer , Daniel F. Carroll , Glenn A. Eisman , Gene A. Cochran , David W. Susnitzky , Donald R. Beaman , Kevin J. Nilsen
- 申请人地址： MI Midland
- 专利权人： The Dow Chemical Company
- 当前专利权人： The Dow Chemical Company
- 当前专利权人地址： MI Midland
- 主分类号： C04B35/565
- IPC分类号： C04B35/565 ; C01B21/068 ; C04B35/584 ; C04B35/593 ; C04B35/626 ; C04B35/577 ; C04B35/596
摘要：
Prepare silicon nitride-silicon carbide composite powders by carbothermal reduction of crystalline silica powder, carbon powder and, optionally, crystalline silicon nitride powder. The crystalline silicon carbide portion of the composite powders has a mean number diameter less than about 700 nanometers and contains nitrogen. The composite powders may be used to prepare sintered ceramic bodies and self-reinforced silicon nitride ceramic bodies.
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