Rare earth magnets and method for manufacturing the same

摘要

The method for manufacturing alloy powder for R-Fe-B type rare earth magnets of the present invention includes a first pulverization step of coarsely pulverizing a material alloy for rare earth magnets and a second pulverization step of finely pulverizing the material alloy. In the first pulverization step, the material alloy is pulverized by a hydrogen pulverization method. In the second pulverization step, easily oxidized super-fine powder (particle size: 1.0 mu m or less) is removed to adjust the particle quantity of the super-fine powder to 10% or less of the particle quantity of the entire powder. <IMAGE>