发明名称 |
RARE EARTH SINTERED MAGNET, METHOD FOR PRODUCING THE SAME, MOTOR, AND AUTOMOBILE |
摘要 |
Provided is a rare earth sintered magnet 10 comprising a group of main phase grains 2 each composed of an R-T-B-based rare earth magnet comprising a core 4 and a shell 6 covering the core 4, wherein a thickness of the shell 6 is 500 nm or less, R includes a light rare earth element and a heavy rare earth element, and a Zr compound 8 is present in a grain boundary phase 7 of the group of main phase grains 2 and/or the shell 6. Also provided are a motor comprising the rare earth sintered magnet 10 and an automobile comprising the motor.
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申请公布号 |
US2013026870(A1) |
申请公布日期 |
2013.01.31 |
申请号 |
US201113637247 |
申请日期 |
2011.03.30 |
申请人 |
TDK CORPORATION;BABA FUMITAKA;TANAKA SATOSHI;IWASAKI MAKOTO;ISHIZAKA CHIKARA |
发明人 |
BABA FUMITAKA;TANAKA SATOSHI;IWASAKI MAKOTO;ISHIZAKA CHIKARA |
分类号 |
H01F7/02;B05D5/00;H02K21/00 |
主分类号 |
H01F7/02 |
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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