Daido Tokushuko Kabushiki Kaisha

Daido Steel Co., Ltd.

Kuretake Electro-Steel Co., Ltd.

Takao Yabumi

Hayato Hashino

Keiko Hioki

Masahiro Hiraoka

Koji Tsuru

Shunji Suzuki

A material for anisotropic magnet, comprising,

Material for anisotropic magnet and method of manufacturing the same

The present invention provides a rare earth magnet, which is formed through at least hot molding, the rare earth magnet containing grains including an RXB phase as a main phase, and a grain boundary phase surrounding peripheries of the grains, in which R is at least one element selected from the group consisting of Nd, Pr, Dy, Tb and Ho, and X is Fe or Fe with a part being substituted by Co; in which an element RH is more concentrated in the grain boundary phase than in the grains, in which the element RH is at least one element selected from the group consisting of Dy, Tb and Ho; and the element RH is present with a substantially constant concentration distribution from the surface part of the magnet to the central part of the magnet.

Rare earth magnet and production process thereof

The present invention provides a bond magnet for direct current reactor which is to be disposed in a gap formed in a magnetic core of a direct current rector, the bond magnet containing a magnet powder containing a rapidly quenched powder of a rare earth magnet alloy. The present invention also provides a direct current reactor including a magnetic core having a gap and a winding area wound around the magnetic core, in which the bond magnet is disposed in the gap of the magnetic core.

Bond magnet for direct current reactor and direct current reactor

Growing community of inventors

Nagoya, Japan

Takao Yabumi