Preparation of rare earth permanent magnet

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United States of America Patent

PATENT NO 9845545
SERIAL NO

14624779

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Abstract

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A rare earth permanent magnet is prepared by immersing a portion of a sintered magnet body of R1—Fe—B composition (wherein R1 is a rare earth element) in an electrodepositing bath of a powder dispersed in a solvent, the powder comprising an oxide, fluoride, oxyfluoride, hydride or rare earth alloy of a rare earth element, effecting electrodeposition for letting the powder deposit on a region of the surface of the magnet body, and heat treating the magnet body with the powder deposited thereon at a temperature below the sintering temperature in vacuum or in an inert gas.

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Patent Owner(s)

Patent OwnerAddress
SHIN-ETSU CHEMICAL CO LTD4-1 MARUNOUCHI 1-CHOME CHIYODA-KU TOKYO 1000005 ?1000005

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kuribayashi, Yukihiro Echizen, JP 16 43
Nagasaki, Yoshifumi Echizen, JP 9 71

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