发明名称 |
Method of increasing impact strength of silicon nitride |
摘要 |
A method is described for increasing the impact properties of dense silicon nitride articles. The method includes the application of a slurry composed predominately of silicon powder to the surface of the dense silicon nitride article. The slurry coated article is then nitrided at an elevated temperature to partially convert the silicon powder to silicon nitride and to bond the particles together and to the substrate. About 15 to 45 volume percent of the silicon powder is not converted to silicon nitride but remains as elemental silicon.
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申请公布号 |
US4252860(A) |
申请公布日期 |
1981.02.24 |
申请号 |
US19790054522 |
申请日期 |
1979.07.02 |
申请人 |
UNITED TECHNOLOGIES CORPORATION |
发明人 |
BRENNAN, JOHN J.;GALASSO, FRANCIS S.;HULSE, CHARLES O. |
分类号 |
C04B35/591;C04B41/50;C04B41/87;(IPC1-7):B32B9/04;B32B13/04 |
主分类号 |
C04B35/591 |
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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