| 摘要 |
PURPOSE:To enhance the magnetic characteristics such as coercive force and square ratio of an Sm-Ce(CoFeCu)2 type magnet by combinedly adding Ti, Zr and Mn to the magnet. CONSTITUTION:Ti, Zr and Mn are combinedly added to an Sm-Ce(CoFeCu)2 type magnet to obtain a permanet magnet alloy represented by the specified compositional formula, wherein 0.1<=alpha<=0.9, 0.1<=x<=0.3, 0.05<=y<=0.15, 0.002<=u<=0.03, 0.002<=v<=0.03, 0.005<=w<=0.08, 5.7<=z<=8.1 and 0.01<=u+v+w<=0.1. Sm, Ce, Co, Fe, Cu, Ti, Zr and Mn are weighed in a prescribed ratio so as to satishy said composition, and they are put into an alumina crucible and melted by high-frequency heating in a vacuum furnace. The melt is cast in a water cooled mold to obtain an ingot of this magnet alloy. |
