发明名称 |
Silicon nitride sintered body. |
摘要 |
<p>A silicon nitride sintered body comprising alpha -silicon nitride including alpha '-sialon and beta '-sialon including beta -silicon nitride in which the content of the alpha -silicon nitride including alpha '-sialon in the surface part thereof is less than its content in the inner part thereof. The silicon nitride sintered body is excellent in mechanical strength at ordinary temperature, productivity and cost efficiency.</p> |
申请公布号 |
EP0544070(A2) |
申请公布日期 |
1993.06.02 |
申请号 |
EP19920115304 |
申请日期 |
1992.09.08 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES, LTD. |
发明人 |
YAMAMOTO, TAKEHISA;NISHIOKA, TAKAO;AWAZU, TOMOYUKI;YAMAKAWA, AKIRA |
分类号 |
C04B35/584;C04B35/593;C04B35/597 |
主分类号 |
C04B35/584 |
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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