发明授权
- 专利标题： Sintered ferrite magnet and its production method
- 专利标题（中）： 烧结铁氧体磁铁及其制备方法
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申请号： US13583491申请日： 2011-03-09
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公开(公告)号： US08506838B2公开(公告)日： 2013-08-13
- 发明人: Seiichi Hosokawa , Etsushi Oda , Hiroshi Iwasaki
- 申请人： Seiichi Hosokawa , Etsushi Oda , Hiroshi Iwasaki
- 申请人地址： JP Tokyo
- 专利权人： Hitachi Metals, Ltd.
- 当前专利权人： Hitachi Metals, Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： Sughrue Mion, PLLC
- 优先权： JP2010-053611 20100310
- 国际申请： PCT/JP2011/055553 WO 20110309
- 国际公布： WO2011/111756 WO 20110915
- 主分类号： H01F1/11
- IPC分类号： H01F1/11 ; H01F41/02 ; C01G49/00 ; C04B35/40
摘要：
A sintered ferrite magnet comprising a first granular ferrite compound phase containing Ca, La, Fe and Co and having a Curie temperature Tc1 between 415° C. and 430° C., and a second granular ferrite compound phase containing Sr, La, Fe and Co and having a Curie temperature Tc2 between 437° C. and 455° C., the volume ratio of the first ferrite compound phase being 50-90%, and the volume ratio of the second ferrite compound phase being 10-50%, with their total volume ratio being 95% or more.
公开/授权文献
- US20120326074A1 SINTERED FERRITE MAGNET AND ITS PRODUCTION METHOD 公开/授权日：2012-12-27
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