发明授权
- 专利标题: Composite ceramics and method of making the same
- 专利标题(中): 复合陶瓷及其制作方法
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申请号: US312300申请日: 1989-02-17
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公开(公告)号: US4923829A公开(公告)日: 1990-05-08
- 发明人: Yoshiyuki Yasutomi , Yasuo Matsushita , Kousuke Nakamura
- 申请人: Yoshiyuki Yasutomi , Yasuo Matsushita , Kousuke Nakamura
- 申请人地址: JPX Tokyo
- 专利权人: Hitachi, Ltd.
- 当前专利权人: Hitachi, Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX61-207927 19860905
- 主分类号: C04B35/584
- IPC分类号: C04B35/584 ; C04B35/56 ; C04B35/58 ; C04B35/591 ; C04B35/80 ; C04B38/06 ; C22C29/00 ; C22C49/00
摘要:
Composite ceramic materials and a method of the same are disclosed, in which a ceramic material mainly containing silicon nitride, and at least one compound selected from a group consisting of nitrides, carbides, borides, silicides, oxides and oxynitrides of elements belonging to IIIa, IIIb, IVa, IBb, Va, VIa and VIII are combined to form a sintered body, and particles and whiskers of the ceramic material and compound are interlocked with each other and fixed so that the sintered body has a porosity of 5 to 30%. In the above composite ceramics, the particle of the compound are coupled with each other through the whisker or particle of the ceramic material. Accordingly, the composite ceramics are small in charge rate of size due to sintering, and are excellent in tenacity, heat resisting property and thermal shock resisting property. Further, the resistivity of the sintered body can be varied by changing the mixture ratio of ceramic material and compound.
公开/授权文献
- US5558205A Conveyors 公开/授权日:1996-09-24