HIGHLY COERCIVE SINTERED MAGNETS FROM (Nd, Dy)-Fe-B ALLOYS FABRICATED BY THE METHOD OF STRIP CASTING

摘要

The properties of sintered permanent magnets produced by the traditional process (TP) and by a low-oxygen process (LOP) with the use of (Nd, Dy)-Fe-B rapidly hardened plate alloys are compared. Optimization of the LOP gives highly coercive magnets with world-level properties, i.e., B_r≥ 12.7 kGs, H_c ≥ 25.0 kOe, and