发明名称 |
Permanent magnet having high corrosion resistance, a process for making the same and a process for making a bonded magnet having high corrosion resistance. |
摘要 |
<p>A sintered or bonded permanent magnet formed from a material consisting mainly of iron, particularly a Nd-Fe-B alloy, and having a high corrosion resistance has a surface coated with a resin obtained by the polycondensation of tannic acid, phenols and aldehydes. A bonded magnet is also made from a powder of any such material composed of particles coated with any such resin.</p> |
申请公布号 |
EP0481224(B1) |
申请公布日期 |
1994.03.09 |
申请号 |
EP19910115696 |
申请日期 |
1991.09.16 |
申请人 |
KANEGAFUCHI KAGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
MOHRI, FUMIHITO, KANEGAFUCHI KAGAKU KOGYO K.K.;NOMURA, TAKUJI, KANEGAFUCHI KAGAKU KOGYO K.K.;MIKI, SHOUGO, KANEGAFUCHI KAGAKU KOGYO K.K. |
分类号 |
B22F3/24;C22C38/00;H01F1/053;H01F1/057;H01F1/08;H01F41/02;(IPC1-7):H01F1/08 |
主分类号 |
B22F3/24 |
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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