| 简介 |
PROBLEM TO BE SOLVED : To provide a manufacturing method for magnetic member capable of efficiently obtaining a magnetic member which becomes the material for a rare-earth magnet with a high magnetic characteristic; and a magnetic member obtained by the manufacturing method.SOLUTION : A manufacturing method for magnetic member includes the following preparation, hydrogenation, molding and dehydrogenation steps, and heat treatment in the hydrogenation step uses a swing type furnace. The preparation step is the step for preparing a raw material comprising R-Fe-M-based alloy including rare-earth element (hereinafter, represented by R), Fe and one kind selected from B, C and N (hereinafter, represented by M) as an additional element. In the hydrogenation step, the raw material is heat-treated in the atmosphere including hydrogen at a temperature of disproportionation of R-Fe-M-based alloy or higher to produce a magnet powder. The molding step is the step for compression molding the magnet powder to form a powder compact. The dehydrogenation step is the step for heat-treating the powder compact in the pressure-reduced atmosphere or the inert atmosphere at a temperature of recombination of the powder compact or higher to form a magnetic member.COPYRIGHT : (C)2012, JPO&INPIT |
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