Method of producing SmFeN-based rare earth magnet

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United States of America Patent

PATENT NO 12027294
APP PUB NO 20230105234A1
SERIAL NO

17935907

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Abstract

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A method of producing a SmFeN-based rare earth magnet, the method including: dispersing a SmFeN-based anisotropic magnetic powder including Sm, Fe, La, W, R, and N, wherein R is at least one selected from the group consisting of Ti, Ba, and Sr, using a resin-coated metal media or a resin-coated ceramic media to obtain a dispersed SmFeN-based anisotropic magnetic powder; mixing the dispersed SmFeN-based anisotropic magnetic powder with a modifier powder to obtain a powder mixture; compacting the powder mixture in a magnetic field to obtain a magnetic field compact; pressure-sintering the magnetic field compact to obtain a sintered compact; and heat-treating the sintered compact.

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Patent Owner(s)

Patent OwnerAddress
TOYOTA JIDOSHA KABUSHIKI KAISHATOYOTA-SHI AICHI-KEN 471-8571
NICHIA CORPORATIONANAN-SHI TOKUSHIMA 774-8601

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ito, Masaaki Anjo, JP 191 1408
Maehara, Hisashi Itano-gun, JP 20 11

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