发明名称 |
METHOD FOR PRODUCING R-T-B-BASED SINTERED MAGNETS |
摘要 |
A method for producing R-T-B-based sintered magnets includes: a step for preparing R-T-B-based sintered magnet bodies (1); a step for preparing RH diffusion sources that contain a heavy rare earth element (RH) (comprising Dy and/or Tb) and Fe with a mass% of 30 to 80; a step for charging the R-T-B-based sintered magnet bodies (1) and the RH diffusion sources (2) into a processing chamber (3) in such a manner that the R-T-B-based sintered magnet bodies (1) and the RH diffusion sources (2) can move relatively, and can come close to each other or come into contact with each other; and an RH diffusion step for heating the sintered magnet bodies (1) and the RH diffusion sources (2) at a temperature of 850°C to 1000°C while moving the sintered magnet bodies (1) and the RH diffusion sources (2) continuously or intermittently in the processing chamber (3). |
申请公布号 |
WO2012008426(A1) |
申请公布日期 |
2012.01.19 |
申请号 |
WO2011JP65837 |
申请日期 |
2011.07.12 |
申请人 |
HITACHI METALS, LTD.;KUNIYOSHI FUTOSHI |
发明人 |
KUNIYOSHI FUTOSHI |
分类号 |
H01F41/02;B22F3/24;C22C28/00;C22C33/02;C22C38/00;H01F1/053;H01F1/08 |
主分类号 |
H01F41/02 |
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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