发明名称 |
Process for the production of sintered aluminium nitrides. |
摘要 |
<p>A process for producing sintered aluminium nitride bodies comprises sintering a relatively impure aluminium nitride powder comprising at least 95% by weight aluminium nitride and having not more than 3% bound oxygen content, not more than 0.6% metal or metal compound impurities, and not more than 0.5% silicon or carbon impurities, the sintering being carried out by heating the aluminium nitride body from room temperature to the sintering temperature at a rate of not more than 250 DEG C per hour; introducing an inert gas containing from 1 to 4% by volume hydrogen until the temperature reaches 1200 DEG C; continuing to introduce solely an inert gas as the temperature is further increased to the sintering temperature; sintering the body at a sintering temperature of from 1600 DEG to 1900 DEG C; and cooling the sintered body at a rate of not more than 300 DEG C per hour.</p> |
申请公布号 |
EP0300601(A2) |
申请公布日期 |
1989.01.25 |
申请号 |
EP19880305045 |
申请日期 |
1988.06.02 |
申请人 |
KERAMONT ADVANCED CERAMIC PRODUCTS CORPORATION |
发明人 |
COX, CARL V.;MALLIA, ROBERT A. |
分类号 |
C04B35/581;C04B35/64 |
主分类号 |
C04B35/581 |
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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