Method of producing SmFeN-based rare earth magnet
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United States of America Patent
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Jul 2, 2024
Grant Date -
Dec 15, 2022
app pub date -
Jun 10, 2022
filing date -
Jun 10, 2022
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Abstract
A method of producing a SmFeN-based rare earth magnet, the method including: dispersing a SmFeN-based anisotropic magnetic powder comprising Sm, Fe, and N 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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