发明名称 |
SOFT MAGNETIC MATERIAL, DUST CORE, METHOD FOR MANUFACTURING SOFT MAGNETIC MATERIAL, AND METHOD FOR MANUFACTURING DUST CORE |
摘要 |
A soft magnetic material, a dust core, a method for manufacturing the soft magnetic material, and a method for manufacturing the dust core that can improve DC bias characteristics are provided. A soft magnetic material includes a plurality of metal magnetic particles 10 whose coefficient of variation Cv (&sgr;/μ), which is a ratio of a standard deviation (&sgr;) of a particle size of the metal magnetic particles 10 to an average particle size (μ) thereof, is 0.40 or less and whose circularity Sf is 0.80 or more and 1 or less. The metal magnetic particles 10 preferably have an average particle size of 1 μm or more and 70 μm or less. The soft magnetic material preferably further includes an insulating coated film that surrounds a surface of each of the metal magnetic particles 10. |
申请公布号 |
US2010044618(A1) |
申请公布日期 |
2010.02.25 |
申请号 |
US20080518498 |
申请日期 |
2008.09.03 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES, LTD. |
发明人 |
ISHIMINE TOMOYUKI;SAKAMOTO TOSHIHIRO;MAEDA TORU;IGARASHI NAOTO |
分类号 |
H01F1/04;B05D5/00;B05D7/00;B22F1/00;B22F1/02;B32B5/16 |
主分类号 |
H01F1/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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