軟磁性材料ならびに圧粉磁心およびその製造方法

Japanese Patent JP4535070

B2

A soft magnetic material includes a plurality of composite magnetic particles (40). Each of the plurality of composite magnetic particles (40) has: a metal magnetic particle (10) including iron; a lower film (20) surrounding the surface of the metal magnetic particle (10) and including a nonferrous metal; and an insulating upper film (30) surrounding the surface of the lower film (20) and including at least one of oxygen and carbon. The nonferrous metal has an affinity with the at least one of oxygen and carbon included in the upper film (30) that is larger than such affinity of iron; or the nonferrous metal has a diffusion coefficient with respect to the at least one of oxygen and carbon included in the upper film (30) that is smaller than such diffusion coefficient of iron. This configuration provides desirable magnetic properties.

JP3142858	[Title of Invention] Ferrite molded product and its manufacturing method
JP2022179441	GRAPHENE COMPOSITE MATERIAL AND MANUFACTURING METHOD FOR THE SAME
WO/2008/041588	SOFT-MAGNETIC IRON COMPOSITE POWDER FOR PRODUCING SOFT-MAGNETIC COMPOSITE MATERIAL WITH HIGH RESISTIVITY AND LOW IRON LOSS

Toru Maeda
Naoto Igarashi
Haruhisa Toyota
Kazuhiro Hirose

JP2006519360A

September 01, 2010

February 22, 2005

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Sumitomo Electric Industries, Ltd.

H01F1/33; B22F1/16; B22F3/00; H01F1/24; H01F1/26; H01F3/08; H01F27/255; H01F41/02

JP2005085967A	2005-03-31
JP2004197115A	2004-07-15
JP2003303711A	2003-10-24
JP2003272911A	2003-09-26
JPH07179982A	1995-07-18
JPH07245209A	1995-09-19
JP2003272910A	2003-09-26

Kuro Fukami
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Hisato Noda
Masayuki Sakai

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