MODIFIED ND-FE-B PERMANENT MAGNET WITH HIGH CORROSION RESISTANCE

摘要

A type of sintered Nd-Fe-B permanent magnet with high corrosion resistance is produced by dual alloy method. The method comprises the following steps: preparing the powders of master phase alloy and intergranular phase alloy respectively, mixing the powders, compacting the powders in magnetic field, sintering the compacted body at 1050~1125℃, and annealing at 920-1020℃ and 500-650℃ successively.