Patent ID: 8524013

Claim:
A manufacturing method of a permanent magnet comprising steps of: preparing an electrolytic solution through one of dissolving chloride or injecting hydrogen chloride gas into alcohol which is a same alcohol as is a constituent element of metal alkoxide to be manufactured; performing electrolysis on the electrolytic solution while using, for an anode, a ferroalloy containing iron and M, M representing metal which is a constituent element of the metal alkoxide to be manufactured, in a predetermined weight ratio and, for a cathode, one of the ferroalloy, carbon, platinum or stainless steel, to obtain an alcohol solution of the metal alkoxide; milling magnet material into magnet powder; adhering the metal alkoxide to particle surfaces of the magnet powder through adding the metal alkoxide contained in the alcohol solution of the metal alkoxide obtained at the step of performing electrolysis to the magnet powder obtained at the step of milling magnet material; compacting the magnet powder having the metal alkoxide adhered on the particle surfaces thereof so as to obtain a compact body; and sintering the compact body, and wherein the permanent magnet is Nd—Fe—B based.