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    RARE EARTH SINTERED MAGNET AND METHOD FOR PRODUCING SAME
    6.
    发明公开
    RARE EARTH SINTERED MAGNET AND METHOD FOR PRODUCING SAME 审中-公开
    GESINTERTES SELTENERDENMAGNET UND HERSTELLUNGSVERFAHRENDAFÜR

    公开(公告)号：EP1961506A1

    公开(公告)日：2008-08-27

    申请号：EP06833815.1

    申请日：2006-11-30

    申请人： HITACHI METALS, LTD.

    发明人： NOZAWA, Noriyuki ,  ODAKA, Tomoori ,  MATSUURA, Yutaka

    IPC分类号： B22D11/06 ,  B22F3/00 ,  B22F3/02 ,  C22C33/02 ,  C22C38/00 ,  H01F1/053 ,  H01F1/08 ,  H01F41/02

    CPC分类号： B22D11/0611 ,  B22F2998/10 ,  B22F2999/00 ,  C22C33/0278 ,  C22C38/005 ,  H01F1/0577 ,  H01F41/0273 ,  H01F41/0293 ,  B22F9/04 ,  B22F3/02 ,  B22F3/10 ,  B22F2202/05

    摘要： A sintered rare-earth magnet according to the present invention includes an Nd 2 Fe 14 B type crystalline phase as its main phase and Al as an additive. The magnet includes at least one light rare-earth element LR selected from the group consisting of yttrium and the rare-earth elements other than Dy, Ho and Tb, and at least one heavy rare-earth element HR selected from the group consisting of Dy, Ho and Tb. The mole fractions α 1, α 2 and β of the light and heavy rare-earth elements LR and HR and Al satisfy the inequalities 25≦ α 1+ α 2 ≦40 mass%, 0 α 2≦40 mass%, β >0.20 mass%, and 0.04 ≦ β / α 2≦ 0.12.

    摘要翻译： 根据本发明的烧结稀土类磁铁，以Nd 2 Fe 14 B型结晶相为主相，Al为添加剂。 所述磁体包括选自由钇和除Dy，Ho和Tb以外的稀土元素组成的组中的至少一种轻稀土元素LR，以及选自由Dy组成的组中的至少一种重稀土类元素 ，Ho和Tb。 轻重稀土元素LR和HR和Al的摩尔分数±1，±2和²满足不等式25‰|±1 +±2‰| 40质量％，0 <±2‰|40质量％ ，0.20质量％，0.04‰|²/±2‰| 0.12。

    R-Fe-B ANISOTROPIC SINTERED MAGNET
    9.
    发明公开
    R-Fe-B ANISOTROPIC SINTERED MAGNET 有权
    ANISOTROPER GESINTERTER R-FE-B-MAGNET

    公开(公告)号：EP2184747A1

    公开(公告)日：2010-05-12

    申请号：EP08829605.8

    申请日：2008-09-02

    申请人： Hitachi Metals, Ltd.

    发明人： ODAKA, Tomoori ,  MORIMOTO, Hideyuki ,  YOSHIMURA, Kohshi ,  TAKAKI, Shigeru

    IPC分类号： H01F1/053 ,  B22F3/00 ,  B22F3/24 ,  C22C38/00 ,  H01F1/08

    CPC分类号： H01F1/0577 ,  B22F2999/00 ,  C22C33/0257 ,  C22C38/005 ,  C22C2202/02 ,  H01F41/0293 ,  B22F2207/01

    摘要： An R-Fe-B based anisotropic sintered magnet according to the present invention has, as a main phase, an R 2 Fe 14 B type compound that includes a light rare-earth element RL (which is at least one of Nd and Pr) as a major rare-earth element R, and also has a heavy rare-earth element RH (which is at least one element selected from the group consisting of Dy and Tb). In the crystal lattice of the main phase, the c-axis is oriented in a predetermined direction. The magnet includes a portion in which at least two peaks of diffraction are observed within a 2θ range of 60.5 degrees to 61.5 degrees when an X-ray diffraction measurement is carried out using a CuK α ray on a plane that is located at a depth of 500 µm or less under a pole face of the magnet and that is parallel to the pole face.

    摘要翻译： 本发明的R-Fe-B系各向异性烧结磁体作为主相，具有包含轻稀土元素RL（Nd和Pr中的至少一种）的R 2 Fe 14 B型化合物， 作为主要的稀土元素R，并且还具有重稀土元素RH（其是选自Dy和Tb中的至少一种元素）。 在主相的晶格中，c轴在预定方向上取向。 磁体包括在使用位于深度的平面上的CuK±射线进行X射线衍射测量时，在60.5度至61.5度的2θ范围内观察到至少两个衍射峰的部分 在磁体的极面下方为500μm以下，并且平行于极面。