| 发明名称 |
High hardness silicon nitride sintered bodies |
| 摘要 |
A high hardness silicon nitride sintered body which includes 10 DIFFERENCE 50% of a alpha -Si3N4 per total weight of silicon nitride and has a Knoop hardness of not less than 15.5 Gpa, and is use as a bearing material or the like.
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| 申请公布号 |
US5015608(A) |
申请公布日期 |
1991.05.14 |
| 申请号 |
US19890379704 |
申请日期 |
1989.07.12 |
| 申请人 |
NGK INSULATORS, LTD. |
发明人 |
MATSUHISA, TADAAKI;HAYAKAWA, ISSEI |
| 分类号 |
C04B35/584;C04B35/593 |
主分类号 |
C04B35/584 |
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