FABRICATION METHOD OF RARE EARTH-BASED SINTERED MAGNET
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United States of America Patent
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Issued Date -
Oct 22, 2015
app pub date -
Apr 10, 2015
filing date -
Apr 18, 2014
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Abandoned
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Abstract
Provided is a fabrication method of a rare earth-based sintered magnet including: a) a first doping step of mixing and sintering a first doping material including a first heavy rare earth compound with a rare earth-based magnet raw material powder to fabricate a first doped sintered body; and b) a second doping step of forming a coating layer of a second doping material including a second heavy rare earth compound on a surface of the first doped sintered body and performing a heat-treatment to fabricate a second doped sintered body.
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