发明名称 |
PERMANENT MAGNET, METHOD FOR PRODUCING SAME, AND MOTOR AND POWER GENERATOR EACH USING SAME |
摘要 |
Disclosed is a permanent magnet which has a composition represented by the composition formula: R(FepMqCur(Co1-sAs)1-p-q-r)z (wherein R represents at least one element selected from rare earth elements; M represents at least one element selected from among Ti, Zr and Hf; A represents at least one element selected from among Ni, V, Cr, Mn, Al, Si, Ga, Nb, Ta and W; p satisfies 0.05 = p = 0.6; q satisfies 0.005 = q = 0.1; r satisfies 0.01 = r = 0.15; s satisfies 0 = s = 0.2; and z satisfies 4 = z = 9). The permanent magnet has a two-phase structure that is composed of a Th2Zn17 crystalline phase and a copper-rich phase. In a cross section of the permanent magnet comprising the crystal c-axis of the Th2Zn17 crystalline phase, the average distance between copper-rich phases is 120 nm or less. |
申请公布号 |
WO2011121647(A1) |
申请公布日期 |
2011.10.06 |
申请号 |
WO2010JP02317 |
申请日期 |
2010.03.30 |
申请人 |
KABUSHIKI KAISHA TOSHIBA;HORIUCHI, YOSUKE;SAKURADA, SHINYA;OKAMOTO, KEIKO;HAGIWARA, MASAYA |
发明人 |
HORIUCHI, YOSUKE;SAKURADA, SHINYA;OKAMOTO, KEIKO;HAGIWARA, MASAYA |
分类号 |
B22F3/00 |
主分类号 |
B22F3/00 |
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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