发明授权
US07371292B2 Nd-Fe-B type anisotropic exchange spring magnet and method of producing the same
失效
Nd-Fe-B型各向异性交换弹簧磁铁及其制造方法
- 专利标题： Nd-Fe-B type anisotropic exchange spring magnet and method of producing the same
- 专利标题（中）： Nd-Fe-B型各向异性交换弹簧磁铁及其制造方法
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申请号： US10705235申请日： 2003-11-12
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公开(公告)号： US07371292B2公开(公告)日： 2008-05-13
- 发明人: Hideaki Ono
- 申请人： Munekatsu Shimada , Takae Ono, legal representative , Makoto Kano , Tetsurou Tayu
- 申请人地址： JP Kanagawa
- 专利权人： Nissan Motor Co., Ltd.
- 当前专利权人： Nissan Motor Co., Ltd.
- 当前专利权人地址： JP Kanagawa
- 代理机构： McDermott Will & Emery LLP
- 优先权： JP2002-328579 20021112
- 主分类号： H01F1/057
- IPC分类号： H01F1/057
摘要：
A Nd—Fe—B type anisotropic exchange spring magnet is produced by a method of obtaining powder of a Nd—Fe—B type rare earth magnet alloy which comprises hard magnetic phases and soft magnetic phases wherein a minimum width of the soft magnetic phases is smaller than or equal to 1 μm and a minimum distance between the soft magnetic phases is greater than or equal to 0.1 μm, obtaining a compressed powder body by compressing the powder, and obtaining the Nd—Fe—B type anisotropic exchange spring magnet by sintering the compressed powder body using a discharge plasma sintering unit.
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