发明名称 |
SURFACE TREATED RARE EARTH MAGNETIC POWDER, BONDED MAGNET RESIN COMPOSITION THAT INCLUDES THIS POWDER, AND BONDED MAGNET |
摘要 |
The present invention relates to surface-treated rare earth-based magnetic particles comprising rare-earth-based magnetic particles, a first coating layer comprising a phosphoric acid compound which is formed on a surface of the respective magnetic particles and a second coating layer in the form of a composite coating film comprising a silicon compound and a phosphoric acid compound which is formed on a surface of the first coating layer, wherein an amount of Fe eluted from the rare earth-based magnetic particles is not more than 10 mg/L; a resin composition for bonded magnets comprising the above surface-treated rare earth-based magnetic particles and a resin; and a bonded magnet comprising the above surface-treated rare earth-based magnetic particles. |
申请公布号 |
EP2394761(B1) |
申请公布日期 |
2016.09.07 |
申请号 |
EP20100738560 |
申请日期 |
2010.02.03 |
申请人 |
TODA KOGYO CORPORATION |
发明人 |
SHIGEOKA, KUNIYOSHI;KATAYAMA, NOBUHIRO |
分类号 |
B22F1/02;B22F3/14;C22C33/02;H01F1/053;H01F1/057;H01F1/08 |
主分类号 |
B22F1/02 |
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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