发明授权
- 专利标题： Powder magnetic core and method for manufacturing the same
- 专利标题（中）： 粉末磁芯及其制造方法
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申请号： US13046307申请日： 2011-03-11
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公开(公告)号： US08252124B2公开(公告)日： 2012-08-28
- 发明人: Masahito Koeda , Tomofumi Kuroda , Tomokazu Ishikura , Akihiro Harada , Hiroyuki Ono , Osamu Kido , Satoko Ueda
- 申请人： Masahito Koeda , Tomofumi Kuroda , Tomokazu Ishikura , Akihiro Harada , Hiroyuki Ono , Osamu Kido , Satoko Ueda
- 申请人地址： JP Tokyo
- 专利权人： TDK Corporation
- 当前专利权人： TDK Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Oliff & Berridge, PLC
- 优先权： JP2010-063148 20100318; JP2010-156772 20100709
- 主分类号： H01F1/147
- IPC分类号： H01F1/147 ; H01F1/22
摘要：
The present invention provides a powder magnetic core low in the loss and high in the saturation magnetic flux density and a method for manufacturing the same. More specifically, the present invention provides a powder magnetic core that comprises a soft magnetic metal powder having an average particle size (D50) of 0.5 to 5 μm, a half width of diffraction peak in a direction of α-Fe as measured by X-ray powder diffraction of 0.2 to 5.0°, and an Fe content of 97.0% by mass or more, the core having an oxygen content of 2.0% by mass or more.
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