发明名称 |
R-T-B BASED RARE EARTH ELEMENT PERMANENT MAGNET |
摘要 |
<p>A sintered body comprising a main phase consisting of an R2T14B phase (wherein R represents one or more rare earth elements (providing that the rare earth elements include Y), and T represents one or more transition metal elements essentially containing Fe, or Fe and Co), and a grain boundary phase containing a higher amount of R than the main phase, wherein a platy or acicular product exists. This sintered body enables to inhibit the grain growth, while keeping a decrease in magnetic properties to a minimum, and to improve a suitable sintering temperature range. <IMAGE></p> |
申请公布号 |
EP1465212(A1) |
申请公布日期 |
2004.10.06 |
申请号 |
EP20030798556 |
申请日期 |
2003.09.30 |
申请人 |
TDK CORPORATION |
发明人 |
ISHIZAKA, CHIKARA;NISHIZAWA, GOUICHI;HIDAKA, TETSUYA;FUKUNO, AKIRA;FUJIKAWA, YOSHINORI |
分类号 |
C22C1/04;C22C28/00;C22C30/00;C22C38/00;C22C38/06;C22C38/10;C22C38/14;C22C38/16;H01F1/055;H01F1/057;H01F41/02;(IPC1-7):C22C1/04;H01F1/053;C22C33/02;H01F1/047 |
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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