发明名称 |
Preparation of mixed powders |
摘要 |
A method of preparing a mixture of zirconia and a stabilising agent for the zirconia comprises milling an aqueous suspension of particulate zirconia and particulate stabilising agent in a bead mill for at least 2 minutes in the presence of a particulate mixing medium having an average particle size from 0.2 mm to 3 mm. Preferred stabilising agents are oxides of yttrium, cerium, calcium or magnesium. Surprisingly, ceramics prepared from the product mixture are more resistant to degradation by attack from water above 100 DEG C. than are ceramics prepared from coprecipitated powders.
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申请公布号 |
US5525559(A) |
申请公布日期 |
1996.06.11 |
申请号 |
US19950427223 |
申请日期 |
1995.04.24 |
申请人 |
TIOXIDE SPECIALTIES LIMITED |
发明人 |
METCALFE, MARK S.;DIXON, ALAN |
分类号 |
C04B35/486;(IPC1-7):C04B35/48 |
主分类号 |
C04B35/486 |
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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