发明申请
US20130257573A1 FERROMAGNETIC PARTICLES AND PROCESS FOR PRODUCING THE SAME, ANISOTROPIC MAGNET AND BONDED MAGNET
审中-公开
氟化物颗粒及其制造方法，各向异性磁铁和粘结磁体
- 专利标题： FERROMAGNETIC PARTICLES AND PROCESS FOR PRODUCING THE SAME, ANISOTROPIC MAGNET AND BONDED MAGNET
- 专利标题（中）： 氟化物颗粒及其制造方法，各向异性磁铁和粘结磁体
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申请号： US13825584申请日： 2011-09-22
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公开(公告)号： US20130257573A1公开(公告)日： 2013-10-03
- 发明人: Migaku Takahashi , Tomoyuki Ogawa , Yasunobu Ogata , Akimasa Sakuma , Naoya Kobayashi , Chammika Ruwan Polwatta Gallage , Kaori Kohara
- 申请人： Migaku Takahashi , Tomoyuki Ogawa , Yasunobu Ogata , Akimasa Sakuma , Naoya Kobayashi , Chammika Ruwan Polwatta Gallage , Kaori Kohara
- 申请人地址： JP Sendai-shi, Miyagi-ken JP Otake-shi, Hiroshima-ken
- 专利权人： TOHOKU UNIVERSITY,TODA KOGYO CORPORATION
- 当前专利权人： TOHOKU UNIVERSITY,TODA KOGYO CORPORATION
- 当前专利权人地址： JP Sendai-shi, Miyagi-ken JP Otake-shi, Hiroshima-ken
- 优先权： JP2010-214366 20100924
- 国际申请： PCT/JP2011/071636 WO 20110922
- 主分类号： H01F7/02
- IPC分类号： H01F7/02 ; H01F41/02
摘要：
The present invention relates to ferromagnetic particles comprising an Fe16N2 compound phase in an amount of not less than 70% as measured by Mössbauer spectrum, and at least one metal element X selected from the group consisting of Mn, Ni, Ti, Ga, Al, Ge, Zn, Pt and Si in such an amount that a molar ratio of the metal element X to Fe is 0.04 to 25%, the ferromagnetic particles having a BHmax value of not less than 5 MGOe, and a process for producing the ferromagnetic particles, and further relates to an anisotropic magnet or a bonded magnet which is obtained by magnetically orienting the ferromagnetic particles. The ferromagnetic particles according to the present invention can be produced in an industrial scale and are in the form of Fe16N2 particles comprising different kinds of metal elements having a large BHmax value.