发明名称 |
Method for the production of transparent, polycrystalline alumina with a yellowish color tone |
摘要 |
A method for the production of shaped bodies of transparent polycrystalline alumina having a yellowish color tone. A green body is formed using pure, fine-grained alumina. The auxiliary agents are burned out of the green body. The green body is treated in such a way as to produce a closed surface on the shaped body. The body is compacted to a transparent, polycrystalline alumina body. Finally, the body is annealed in air to impart a yellowish color tone to the body.
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申请公布号 |
US4968459(A) |
申请公布日期 |
1990.11.06 |
申请号 |
US19890335108 |
申请日期 |
1989.04.07 |
申请人 |
DENTAURUM J.P. WINKELSTROETER KG |
发明人 |
SERNETZ, FRIEDRICH |
分类号 |
A61K6/06;C04B35/111;C04B35/645 |
主分类号 |
A61K6/06 |
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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