| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing an R-T-B based rare earth sintered magnet for manufacturing an R-T-B based rare earth sintered magnet having high magnetic characteristics, especially, an excellent coercive force with a high yield. <P>SOLUTION: This method for manufacturing an R-T-B based rare earth sintered magnet includes: a treatment process for preparing treated alloy by carrying out HDDR treatment to R-T-B based raw material alloy; a crashing process for preparing alloy powder whose mean particle diameter is equal to or less than 2 μm by crushing the treated alloy; and a sintering process for preparing a sintered body by molding and sintering the alloy powder in a magnetic field. <P>COPYRIGHT: (C)2010,JPO&INPIT |
