发明授权
- 专利标题： Dust core with specific relationship between particle diameter and coating thickness, and method for producing same
- 专利标题（中）： 颗粒直径与涂层厚度之间具有特定关系的粉尘芯及其制造方法
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申请号： US10597197申请日： 2005-01-28
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公开(公告)号： US07682695B2公开(公告)日： 2010-03-23
- 发明人: Hirokazu Kugai , Naoto Igarashi , Toru Maeda , Kazuhiro Hirose , Haruhisa Toyoda , Koji Mimura , Takao Nishioka
- 申请人： Hirokazu Kugai , Naoto Igarashi , Toru Maeda , Kazuhiro Hirose , Haruhisa Toyoda , Koji Mimura , Takao Nishioka
- 申请人地址： JP Osaka
- 专利权人： Sumitomo Electric Industries, Ltd.
- 当前专利权人： Sumitomo Electric Industries, Ltd.
- 当前专利权人地址： JP Osaka
- 代理机构： Darby & Darby
- 优先权： JP2004-023958 20040130
- 国际申请： PCT/JP2005/001196 WO 20050128
- 国际公布： WO2005/073989 WO 20050811
- 主分类号： B32B5/16
- IPC分类号： B32B5/16 ; B29C67/04
摘要：
The object of the present invention is to provide a powder core and method for making the same that is equipped with insulative coating having superior heat resistance, with the coating making it possible to adequately restrict the flow of eddy currents between particles.The powder core is equipped with a plurality of compound magnetic particles bonded to each other. Each of said plurality of composite magnetic particles includes: a metal magnetic particle 10; an insulative lower layer coating 20 surrounding a surface 10a of said metal magnetic particle 10; an upper layer coating 30 surrounding said lower layer coating 20 and containing silicon; and dispersed particles 50 containing a metal oxide compound and disposed in said lower layer coating 20 and/or said upper layer coating 30. A mean particle diameter R of the dispersed particles 50 meets the condition 10 nm
公开/授权文献
- US20080231409A1 Dust Core and Method for Producing Same 公开/授权日：2008-09-25
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