发明公开
EP2492927A1 FERROMAGNETIC PARTICLE POWDER, METHOD FOR PRODUCING SAME, ANISOTROPIC MAGNET AND BONDED MAGNET
有权
FERROMAGNETISCHES PARTIKELPULVER，VERFAHREN ZU SEINER HERSTELLUNG，ANISOTROPER MAGNET UND GEBUNDENER MAGNET
- 专利标题： FERROMAGNETIC PARTICLE POWDER, METHOD FOR PRODUCING SAME, ANISOTROPIC MAGNET AND BONDED MAGNET
- 专利标题（中）： FERROMAGNETISCHES PARTIKELPULVER，VERFAHREN ZU SEINER HERSTELLUNG，ANISOTROPER MAGNET UND GEBUNDENER MAGNET
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申请号： EP10824929.3申请日： 2010-10-19
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公开(公告)号： EP2492927A1公开(公告)日： 2012-08-29
- 发明人: TAKAHASHI, Migaku , OGAWA, Tomoyuki , OGATA, Yasunobu , KOBAYASHI, Naoya
- 申请人： Toda Kogyo Corporation , Tohoku University
- 申请人地址： 1-4, Meijishinkai Otake-shi Hiroshima 739-0652 JP
- 专利权人： Toda Kogyo Corporation,Tohoku University
- 当前专利权人： Toda Kogyo Corporation,Tohoku University
- 当前专利权人地址： 1-4, Meijishinkai Otake-shi Hiroshima 739-0652 JP
- 代理机构： Woods, Geoffrey Corlett
- 优先权： JP2009243834 20091022
- 国际公布： WO2011049080 20110428
- 主分类号： H01F1/11
- IPC分类号： H01F1/11 ; C01B21/06 ; H01F1/06
摘要：
The present invention relates to Fe 16 N 2 particles in the form of a single phase which are obtained by subjecting iron oxide or iron oxyhydroxide whose surface may be coated with at least alumina or silica, if required, as a starting material, to reducing treatment and nitridation treatment, a process for producing the Fe 16 N 2 particles in the form of a single phase for a heat treatment time of not more than 36 hr, and further relates to an anisotropic magnet or a bonded magnet which is obtained by magnetically orienting the Fe 16 N 2 particles in the form of a single phase. The Fe 16 N 2 particles according to the present invention can be produced in an industrial scale and have a large BH max value.
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