| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for efficiently regenerating the scrap of a bond magnet contg. Sm-Fe-N base alloy powder. SOLUTION: Scrap of a compsn. for a bond magnet is baked in the temp. range of 600 to 1,500 deg.C in the presence of oxygen, is mixed with a new raw material mixture required for producing new alloy powder and is mixed with metal Ca or Ca hydride by the amt. 1.1 to 2.0 times the theoretical one needed for reducing Sm oxide in this mixture to a metal state, and reduction diffusing treatment in which it is heated in the temp. range of 900 to 1,200 deg.C is executed. |
