发明名称 |
METHOD FOR PRODUCING RARE EARTH MAGNETS, AND RARE EARTH MAGNETS |
摘要 |
A method for producing a nanocrystalline rare earth magnet having a grain and a grain boundary phase includes: quenching a melt of a rare earth magnet composition to form a quenched thin ribbon having a nanocrystalline structure; sintering the quenched thin ribbon to obtain a sintered body; heat treating the sintered body at a temperature which is higher than a lowest temperature in a first temperature range where the grain boundary phase diffuses or flows, and which is lower than a lowest temperature in a second temperature range where the grain is inhibited from becoming coarse; and quenching the heat treated sintered body to 200°C or less at a cooling speed of 50°C/min or more. |
申请公布号 |
WO2013027109(A1) |
申请公布日期 |
2013.02.28 |
申请号 |
WO2012IB01613 |
申请日期 |
2012.08.22 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA;SAKUMA, NORITSUGU;KISHIMOTO, HIDEFUMI |
发明人 |
SAKUMA, NORITSUGU;KISHIMOTO, HIDEFUMI |
分类号 |
H01F1/057 |
主分类号 |
H01F1/057 |
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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