发明名称 |
CORROSION-RESISTANT MAGNET AND METHOD FOR PRODUCING THE SAME |
摘要 |
Provided is an R-Fe-B based sintered magnet having on the surface thereof a conversion film that has superior corrosion resistance to conventional conversion films such as a phosphate film, and a method for producing such an R-Fe-B based sintered magnet. The corrosion resistant magnet is characterized in that a conversion film including at least Zr, Nd, fluorine, and oxygen but not phosphorus as constituent elements is directly formed on the surface of an R-Fe-B based sintered magnet in which R is a rare earth element containing at least Nd. |
申请公布号 |
WO2010001878(A2) |
申请公布日期 |
2010.01.07 |
申请号 |
WO2009JP61913 |
申请日期 |
2009.06.30 |
申请人 |
HITACHI METALS, LTD.;NIINAE TOSHINOBU;YOSHIMURA KOSHI;KAMIYAMA KOJI |
发明人 |
NIINAE TOSHINOBU;YOSHIMURA KOSHI;KAMIYAMA KOJI |
分类号 |
H01F1/053;B22F3/24;C22C33/02;C22C38/00;C23C22/34;H01F1/08;H01F41/02 |
主分类号 |
H01F1/053 |
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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