| 简介 |
PROBLEM TO BE SOLVED : To provide a producing method capable of achieving magnetization higher than before when a rare-earth magnet is produced using HDDR treatment.
SOLUTION : A method for producing a rare-earth magnet includes : a step in which R2Fe14B powder is prepared; a step in which the hydrocracking treatment is applied to the R2Fe14B powder to be decomposed into three phases of NdH2, Fe, Fe2B; a step in which powder of three phases is mixed into the other R2Fe14B powder; a step in which powder compaction of the obtained mixed powder is performed in a magnetic field; a next step in which pressure molding is performed; and a step in which the dehydrogenation/re-coupling treatment is performed.
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