Toyota Jidosha Kabushiki Kaisha

Fine Sinter Co., Ltd

Kazuhiro Kawashima

Toshiya Yamaguchi

Eisuke Hoshina

Yusuke Oishi

Junghwan Hwang

Tomoyasu Kitano

A method for manufacturing a powder for a magnetic core including at least a process of performing a siliconizing treatment on a surface of an iron powder containing elemental carbon. In the process of siliconizing treatment, a powder containing at least a silicon dioxide is brought into contact with the surface of the iron powder, elemental silicon is detached from the silicon dioxide by heating the powder of silicon dioxide, and the siliconizing treatment is performed by causing the detached elemental silicon to permeate and diffuse into a surface layer of the iron powder. The invention provides a method for manufacturing a powder for a magnetic core, by which loss reduction is achieved.

Powder for magnetic core, method for manufacturing powder for magnetic core, and dust core

A powder for a dust core comprising a silicon-containing layer formed within a depth of less than 0.15 D from the surface of the surface layer of a soft magnetic metal powder having a particle diameter D and a method for producing the same are provided. The method for producing a powder for a dust corecomprising a silicon-containing layercomprises performing silicon impregnation of the surface of a soft magnetic metal powder (particle)containing a carbon element, wherein:

Powder for dust core and method for producing the same

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Kasugai, Japan

Kazuhiro Kawashima