发明申请
- 专利标题： ANISOTROPIC RARE EARTH MAGNET POWDER, METHOD FOR PRODUCING THE SAME, AND BONDED MAGNET
- 专利标题（中）： 各向异性稀土磁粉，其制造方法和粘结磁铁
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申请号： US13514943申请日： 2010-10-08
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公开(公告)号： US20130009736A1公开(公告)日： 2013-01-10
- 发明人: Yoshinobu Honkura , Chisato Mishima , Masao Yamazaki
- 申请人： Yoshinobu Honkura , Chisato Mishima , Masao Yamazaki
- 申请人地址： JP Tokai-shi, Aichi
- 专利权人： Aichi Steel Corporation
- 当前专利权人： Aichi Steel Corporation
- 当前专利权人地址： JP Tokai-shi, Aichi
- 优先权： JP2009-279314 20091209; JP2010-190868 20100827
- 国际申请： PCT/JP2010/067779 WO 20101008
- 主分类号： H01F1/09
- IPC分类号： H01F1/09 ; H01F7/02
摘要：
The anisotropic rare earth magnet powder of the present invention includes powder particles having R2TM14B1-type crystals of a tetragonal compound of a rare earth element (R), boron (B), and a transition element (TM) having an average crystal grain diameter of 0.05 to 1 μm, and enveloping layers containing at least a rare earth element (R′) and copper (Cu) and enveloping surfaces of the crystals. Owing to the presence of the enveloping layers, coercivity of the anisotropic rare earth magnet powder can be remarkably enhanced without using a scarce element such as Ga and Dy.