| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing a sintered Sm2Co17 magnet with which superior magnetic characteristics can be obtained. SOLUTION: An alloy, that is cast by a strip casting method and comprises 20-30 wt.% of R (R is Sm or two or more kinds of rare earth elements, containing 50% by weight or more of Sm), 10-45% by weight of Fe, 1-10 wt.% of Cu and 0.5-5 wt.% of Zr with the remaining being Co and inevitable impurities is subjected to thermal treatment at 1,000-1,300 deg.C for 0.5-20 hours in a non-acidic atmosphere to obtain a rare earth magnet alloy, having an average grain size of 20-30 μm. Then, this rare earth magnet alloy is pulverized, compressed and molded into magnetic field, sintered, subjected to solution annealing and then subjected to aging treatment. |
