| 简介 |
PROBLEM TO BE SOLVED : To manufacture a high-performance magnetic powder excellent in recyclability, and a bond magnet.
SOLUTION : The method of manufacturing the magnetic powder includes a step of dissolving a material containing a rare-earth magnet, a step of preparing a metal thin strip or a metal powder by rapidly cooling a dissolved metal melt, and a step of pulverizing the metal thin strip or metal powder. The material consists of an R-T-B-based rare-earth sintered magnet and an iron base alloy, and the pulverization of the metal strip or metal powder includes forming a hydride in a hydrogen atmosphere and dehydrogenating it.
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