| 摘要 |
PROBLEM TO BE SOLVED: To provide a magnet which endures high-speed rotation and does not break, by molding a formation of a specific ratio of magnetic alloy powder having Nd2 -Fe14 B phase as a magnetic phase practically to the powder of more than one kind of metal selected from Ni, Co, Mn, etc., into a magnet shape and magnetizing it. SOLUTION: A ribbon is obtained by the very-rapid molten metal quenching of an R-Fe-B or R-Fe-B-Co alloy (R is a rare-earth element containing Y), and this is ground to obtain magnet alloy powder having Nd2 -Fe14 B phase as a magnetic phase. 99.5-50.0wt.% of this magnet alloy powder, and 0.5-50.0wt.% of powder of more than one kind of added metal selected from Ni, Co, Mn, Zn, Cu, Al, Nb, W, Cr, In, Ga, Mo, V, Ti and Bi are mixed. This powder mixed substance is molded into a molding, and a raw magnet material in the shape of a magnet is manufactured by working the molding mechanically. And a permanent magnet is manufactured by magnetizing the raw magnet material as desired. |
