发明授权
- 专利标题： Soft magnetic material, powder magnetic core and method of manufacturing soft magnetic material
- 专利标题（中）： 软磁材料，粉末磁芯和软磁材料的制造方法
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申请号： US11629976申请日： 2005-09-29
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公开(公告)号： US07767034B2公开(公告)日： 2010-08-03
- 发明人: Toru Maeda , Naoto Igarashi , Haruhisa Toyoda , Hirokazu Kugai , Kazuyuki Hayashi , Hiroko Morii , Seiji Ishitani
- 申请人： Toru Maeda , Naoto Igarashi , Haruhisa Toyoda , Hirokazu Kugai , Kazuyuki Hayashi , Hiroko Morii , Seiji Ishitani
- 申请人地址： JP Osaka JP Hiroshima
- 专利权人： Sumitomo Electric Industries, Ltd.,Toda Kogyo Corp.
- 当前专利权人： Sumitomo Electric Industries, Ltd.,Toda Kogyo Corp.
- 当前专利权人地址： JP Osaka JP Hiroshima
- 代理机构： McDermott Will & Emery LLP
- 优先权： JP2004-286164 20040930
- 国际申请： PCT/JP2005/018035 WO 20050929
- 国际公布： WO2006/035911 WO 20060406
- 主分类号： H01F1/20
- IPC分类号： H01F1/20 ; H01F1/24 ; B32B5/00
摘要：
A soft magnetic material is a soft magnetic material including a composite magnetic particle (30) having a metal magnetic particle (10) mainly composed of Fe and an insulating coating (20) covering metal magnetic particle (10), and insulating coating (20) contains an iron phosphate compound and an aluminum phosphate compound. The atomic ratio of Fe contained in a contact surface of insulating coating (20) in contact with metal magnetic particle (10) is larger than the atomic ratio of Fe contained in the surface of insulating coating (20). The atomic ratio of Al contained in the contact surface of insulating coating (20) in contact with metal magnetic particle (10) is smaller than the atomic ratio of Al contained in the surface of insulating coating (20). Thus, iron loss can be reduced.