Nippon Kagaku Yakin Co., Ltd.

Hitachi Metals, Ltd.

Ikuo Uemoto

Hirokazu Kanekiyo

Toshio Miyoshi

Kiyotaka Matsukawa

Kozo Ishihara

Katsunori Bekki

Kazuo Ishikawa

Masafumi Taniguchi

A method for producing a rare-earth alloy based binderless magnet according to the present invention includes the steps of: (A) providing a rapidly solidified rare-earth alloy magnetic powder; and (B) compressing and compacting the rapidly solidified rare-earth alloy magnetic powder by a cold process without using a resin binder, thereby obtaining a compressed compact, 70 vol % to 95 vol % of which is the rapidly solidified rare-earth alloy magnetic powder.

Rare earth alloy binderless magnet and method for manufacture thereof

A soft magnetic compact which is produced by using soft magnetic composite powder in which the surface of magnetic powder is covered with an electrical insulating material containing at least an inorganic insulating material, and a resin material is fusion-bonded to the surface of the inorganic insulating material so as to partially cover the surface of the soft magnetic powder. Accordingly, it is possible to ensure an electrical insulating property between pieces of soft magnetic material powder to secure a good magnetic characteristics and to easily mold a compact.

Soft magnetic composite powder comprising an inorganic insulating coating, production method of the same, and production method of soft magnetic compact

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Osaka, Japan

Ikuo Uemoto