发明名称 |
RARE EARTH PERMANENT MAGNET AND METHOD FOR PRODUCING RARE EARTH PERMANENT MAGNET |
摘要 |
There are provided a rare-earth permanent magnet and a manufacturing method of a rare-earth permanent magnet capable of preventing deterioration of magnet properties. In the method, magnet material is milled into magnet powder. Next, a mixture 12 is prepared by mixing the magnet powder and a binder, and the mixture 12 is formed into a sheet-like shape to obtain a green sheet 14. Thereafter, magnetic field orientation is performed to the green sheet 14, which is then held for several hours in a non-oxidizing atmosphere at a pressure higher than normal atmospheric pressure, at 200 through 900 degrees Celsius for calcination. Thereafter, the calcined green sheet 14 is sintered at a sintering temperature. Thereby a permanent magnet 1 is manufactured. |
申请公布号 |
EP2827348(A4) |
申请公布日期 |
2016.01.20 |
申请号 |
EP20130761122 |
申请日期 |
2013.03.08 |
申请人 |
NITTO DENKO CORPORATION |
发明人 |
KUME, KATSUYA;OKUNO, TOSHIAKI;OZEKI, IZUMI;OMURE, TOMOHIRO;OZAKI, TAKASHI;TAIHAKU, KEISUKE;YAMAMOTO, TAKASHI |
分类号 |
H01F41/02;B22F1/00;B22F3/00;B22F3/02;B22F3/10;B22F3/14;B22F3/15;B22F3/18;B22F7/04;B22F9/04;C22C33/02;C22C38/00;H01F1/057;H01F1/08;H01F1/113 |
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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