发明名称 |
Rare earth metal-based permanent magnet, and process for producing the same |
摘要 |
A rare earth metal-based permanent magnet has a film layer formed substantially of only a fine metal powder on a metal forming the surface of the magnet. The rare earth metal-based permanent magnet having the film layer on its surface is produced in the following manner: A rare earth metal-based permanent magnet and a fine metal powder forming material are placed into a treating vessel, where both of them are vibrated and/or agitated, whereby a film layer made of a fine metal powder produced from the fine metal powder producing material is formed on a metal forming the surface of the magnet. Thus, the formation of a corrosion-resistant film such as plated film can be achieved at a high thickness accuracy by forming an electrically conductive layer uniformly and firmly on the entire surface of the magnet without use of a third component such as a resin and a coupling agent.
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申请公布号 |
US6399150(B1) |
申请公布日期 |
2002.06.04 |
申请号 |
US20000492742 |
申请日期 |
2000.01.27 |
申请人 |
SUMITOMO SPECIAL METALS CO., LTD. |
发明人 |
YOSHIMURA KOHSHI;NISHIUCHI TAKESHI;KIKUI FUMIAKI |
分类号 |
H01F1/08;C22C38/00;C25D7/00;H01F1/053;H01F41/02;(IPC1-7):B05D7/00 |
主分类号 |
H01F1/08 |
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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