| 摘要 |
PURPOSE:To produce the sintered magnet alloy having a high coercive force by mixing the fine powder of an alloy consisting of Mn, B, Si, etc., and alloy powder consisting of Ce, Mn, B, Ti, etc., at a specific ratio and sintering the mixture. CONSTITUTION:The fine powder (about submicron) of the alloy consisting of TMxBySiz (TM is at least one kind among Mn, Fe, Co, and Ni, 0.5<=x<=0.9, 0.1<=y<=0.5, 0<=z<=0.2) and the alloy powder (about 2 to 6mu) consisting of RaTMbBcMd (R is at least one kind among Ce, Pr, Nd, Tb, and Dy; TM is at least one kind among Mn, Fe, Co, and Ni; M is at least one kind among Ti, V, Cu, Ga, Zr, Nb, Mo, Hf, Ta, W; 0.12<=a<=0.4, 0.4<=b<=0.8, 0<=c<=0.25, 0<=d<=0.08) are mixed at 1:(0.03 to 0.5) ratio by weight and the mixture is sintered. The sintered magnet alloy which is improved in Curie point and ther mal stability is obtd. in this way. |
