发明名称 |
RARE EARTH ELEMENT-IRON-BORON ALLOY, AND MAGNETICALLY ANISOTROPIC PERMANENT MAGNET POWDER AND METHOD FOR PRODUCTION THEREOF |
摘要 |
A method of making a magnetically anisotropic magnet powder according to the present invention includes the steps of preparing a master alloy by cooling a rare-earth-iron-boron based molten alloy and subjecting the master alloy to an HDDR process. The step of preparing the master alloy includes the step of forming a solidified alloy layer, including 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, by cooling the molten alloy through contact with a cooling member. <IMAGE> |
申请公布号 |
AU2002354227(A1) |
申请公布日期 |
2003.06.30 |
申请号 |
AU20020354227 |
申请日期 |
2002.12.18 |
申请人 |
SUMITOMO SPECIAL METALS CO., LTD. |
发明人 |
HIROYUKI TOMIZAWA;YUJI KANEKO |
分类号 |
C22C1/04;C22C38/00;C22C38/10;C22C38/14;H01F1/057;(IPC1-7):H01F1/06;B22F1/00;B22F3/00;H01F1/04;B22F9/08 |
主分类号 |
C22C1/04 |
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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