| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing a rare earth magnet ensuring a high coersive force and excellent magnetization, by diffusing and infiltrating a modified alloy uniformly into the whole magnetic powder becoming a rare earth magnet material.SOLUTION: The method of manufacturing a rare earth magnet includes a first step for mixing a magnetic powder Q consisting of the main phase MP of an RE-Fe-B system (RE: at least one kind of Nd, Pr, Y), and a grain boundary phase BR around the main phase MP, and a modified alloy powder T consisting of an RE-M-RH alloy (M: transition metal element or typical metal element, RH: heavy rare-earth metal) or an RE-M alloy, melting the modified alloy powder by performing hot press, and producing a compact S while infiltrating the melt T' to the boundary surface of magnetic powder, and a second step for manufacturing a rare earth magnet C (orientation magnet) by performing hot plasticity processing of the compact S. |
