Toyota Jidosha Kabushiki Kaisha

Fine Sinter Co., Ltd

Jfe Steel Corporation

Kabushiki Kaisha Toyota Chuo Kenkyusho

Yusuke Oishi

Toshiya Yamaguchi

Eisuke Hoshina

Takeshi Hattori

Daisuke Okamoto

Junghwan Hwang

Kazuhiro Kawashima

Takashi Kawano

Naomichi Nakamura

Tatsuhiko Hiratani

Masaki Hirano

Noriko Makiishi

Masaki Sugiyama

Hidenari Yamamoto

Tomoyasu Kitano

Shota Ohira

The invention includes: powder preparation step of obtaining magnetic core powders by mixing, of magnetic powders with thermosetting resin powders in hot state; powder filling step of filling the obtained magnetic core powders into a die; a compaction step of compacting magnetic core powders; and compact heating step of heating, compacts to the elevated temperature state at which the thermosetting resin hardens after compaction.

Method of producing powder magnetic core and method of producing magnetic core powder

An iron powder for dust cores is provided which can be formed into a dust core having a high resistivity and having a low iron loss without degrading the mechanical strength. The iron powder for dust cores includes an iron powder and an oxide film on the surface thereof, wherein the oxide film is composed of a Si-based oxide in which the ratio of Si to Fe satisfies Si/Fe&#x2267;0.8 on an atomic number basis.

Iron powder for dust cores

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

Growing community of inventors

Nagoya, Japan

Yusuke Oishi