发明名称 |
Sialon ceramic compositions and methods of fabrication |
摘要 |
A method of fabricating a SiAlON ceramic body includes: a) combining quantities of Si3N4, Al2O3 and CeO2 to produce a mixture; b) forming the mixture into a desired body shape; c) heating the body to a densification temperature of from about 1550 DEG C. to about 1850 DEG C.; c) maintaining the body at the densification temperature for a period of time effective to densify the body; d) cooling the densified body to a devitrification temperature of from about 1200 DEG C. to about 1400 DEG C.; and e) maintaining the densified body at the devitrification temperature for a period of time effective to produce a beta '-SiAlON crystalline phase in the body having elemental or compound form Ce incorporated in the beta '-SiAlON crystalline phase. Further, a SiAlON ceramic body comprises: a) an amorphous phase; and b) a crystalline phase, the crystalline phase comprising beta '-SiAlON having lattice substituted elemental or compound form Ce.
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申请公布号 |
US5316988(A) |
申请公布日期 |
1994.05.31 |
申请号 |
US19930100888 |
申请日期 |
1993.08.02 |
申请人 |
EG&G IDAHO, INC. |
发明人 |
O'BRIEN, MICHAEL H.;PARK, BLAIR H. |
分类号 |
C04B35/597;(IPC1-7):C04B35/58 |
主分类号 |
C04B35/597 |
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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