发明名称 Method for preparation of permanent magnet
摘要 A blended powder including a first powder containing an R<SUB>2</SUB>T<SUB>14</SUB>B phase as a main phase, and a second powder containing an R<SUB>2</SUB>T<SUB>17 </SUB>phase at 25 wt % or more of the whole is prepared. Herein, R is at least one element selected from the group consisting of all rare-earth elements and Y (yttrium), T is at least one element selected from the group consisting of all transition elements, and Q is at least one element selected from the group consisting of B (boron) and C (carbon). The blended powder is sintered, so as to manufacture a permanent magnet having a structure in which a rare-earth element included in the second powder is concentrated in a grain surgace region of a main phase.
申请公布号 US7244318(B2) 申请公布日期 2007.07.17
申请号 US20030470490 申请日期 2003.07.30
申请人 NEOMAX CO., LTD. 发明人 SEKINO TAKAO;KANEKO YUJI
分类号 H01F1/057;B22F3/12;H01F1/058 主分类号 H01F1/057
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