发明名称 |
Verfahren zur Herstellung eines Magnetpulvers und Herstellung eines Permanentmagneten |
摘要 |
The present invention aims at providing a powdery raw material composition for a permanent magnet superior in the magnetic properties and easy in preparation, a magnetically anisotropic permanent magnet, and a method for producing the magnet by use of the powdery raw material composition. A powdery raw material composition for a permanent magnet according to the present invention is one prepared by subjecting a mixture composed of 13-18 weight% of a neodymium powder, 4-10 weight% of a boron powder and the rest of an acicular iron powder coated with aluminum phosphate to a temperature above 600 DEG C in an atmosphere initially of a hydrogen-containing reducing gas followed later by an inert gas, and a magnetically anisotropic permanent magnet is prepared by compression molding a mixture obtained from the powdery composition and a binder under heating in the presence of a magnetic field. |
申请公布号 |
DE69403041(D1) |
申请公布日期 |
1997.06.12 |
申请号 |
DE1994603041 |
申请日期 |
1994.09.26 |
申请人 |
TAKAHASHI, YASUNORI, TOKYO/TOKIO, JP |
发明人 |
TAKAHASHI, YASUNORI, TOKYO/TOKIO, JP |
分类号 |
B22F1/00;B22F1/02;C22C33/02;C22C38/00;H01F1/057;H01F1/06;H01F7/02;H01F41/02;(IPC1-7):H01F1/057;H01F1/08 |
主分类号 |
B22F1/00 |
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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