发明名称 |
Plättchenförmige alpha-Aluminiumoxidmakrokristalle und Verfahren zu ihrer Herstellung. |
摘要 |
Macrocrystals of alpha alumina in the form of monocrystalline hexagonal platelets. The invention also relates to a process for the manufacture of these macrocrystals by calcination of alumina, for example transition alumina, and in the presence of a fluorine-containing flux, at a relatively low temperature. The macrocrystals of alpha alumina can be employed as reinforcing materials. |
申请公布号 |
DE69005077(T2) |
申请公布日期 |
1994.05.26 |
申请号 |
DE1990605077T |
申请日期 |
1990.09.20 |
申请人 |
ELF ATOCHEM S.A., PUTEAUX |
发明人 |
FAURE, ANNICK, F-69200 VENISSIEUX;BACHELARD, ROLAND, F-69007 LYON |
分类号 |
C01F7/02;C01F7/30;C30B9/00;C30B29/20 |
主分类号 |
C01F7/02 |
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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