发明名称 |
Zirconia porcelain |
摘要 |
Disclosed herein is a high durability zirconia porcelain which is high in thermal stability and free from degradation phenomena such as profile change and strength reduction, and is characterized in that change in length after the zirconia porcelain being maintained in hot water at 250 DEG C. for 50 hours is not more than 0.05%.
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申请公布号 |
US4722915(A) |
申请公布日期 |
1988.02.02 |
申请号 |
US19860936929 |
申请日期 |
1986.11.28 |
申请人 |
NGK INSULATORS, LTD. |
发明人 |
SOMA, TAKAO;MATSUI, MINORU |
分类号 |
C04B35/48;C04B35/486;F02F7/00;H01M8/12;(IPC1-7):C04B35/48 |
主分类号 |
C04B35/48 |
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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