发明名称 |
SINTER MAGNET MADE FROM RARE EARTH-IRON-BORON ALLOY POWDER FOR MAGNET |
摘要 |
A rare-earth-iron-boron based alloy powder, in which a heavy rare-earth element such as Dy is present at a higher concentration in a main phase than in a grain boundary phase and which can be sintered easily, and a method of making such an alloy powder are provided. A rare-earth-iron-boron based magnet alloy according to the present invention includes, as a main phase, a plurality of R2Fe14B type crystals (where R is at least one element selected from the group consisting of the rare-earth elements and yttrium) in which rare-earth-rich phases are dispersed. The main phase includes Dy and/or Tb at a higher concentration than a grain boundary phase does. <IMAGE> |
申请公布号 |
EP1479787(A1) |
申请公布日期 |
2004.11.24 |
申请号 |
EP20030737488 |
申请日期 |
2003.02.04 |
申请人 |
NEOMAX CO., LTD. |
发明人 |
TOMIZAWA, HIROYUKI;KANEKO, YUJI;ODAKA, TOMOORI |
分类号 |
B22D11/06;B22F1/00;B22F9/04;C22C1/04;C22C19/07;C22C33/02;C22C38/00;C22C38/06;C22C38/10;C22C38/16;H01F1/053;H01F1/057;H01F1/06;H01F41/02 |
主分类号 |
B22D11/06 |
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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