发明名称 |
Permanent magnet and method of producing the same. |
摘要 |
<p>A permanent magnet made from an alloy comprising at least one rare earth element, iron and boron characterised in that the average grain diameter of the crystals of the alloy is not more than 150 mu m, the carbon content and the oxygen content of the alloy being not more than 400 ppm and not more than 1000 ppm respectively.</p> |
申请公布号 |
EP0289680(A2) |
申请公布日期 |
1988.11.09 |
申请号 |
EP19870308666 |
申请日期 |
1987.09.30 |
申请人 |
SEIKO EPSON CORPORATION |
发明人 |
AKIOKA, KOJI;KOBAYASHI, OSAMU;SHIMODA, TATSUYA |
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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