In the rare earth bond magnet null rare earth element and the surface is produced magnetic property and heat resistance, making use of the production manner and this magnetic material of the magnetic material for the bond

摘要

PPROBLEM TO BE SOLVED: To provide a method of manufacturing a magnetic material for bonded magnets having high magnetic characteristics, strong corrosion resistance and weather resistance, and a bonded magnet produced by using this magnetic material. PSOLUTION: A treatment process is implemented for sticking a metal evaporation material containing at least one element selected from the group consisting of Dy, Tb, Ho, Er, Tm, Gd, Nd, Sm, Pr, Ce, La, Y, Zr, Cr, Mo, V, Ga, Zn, Cu, Mg, Li, Al, Mn, Nb and Ti, on the surface of a raw material containing a rare earth element and iron. The treatment process includes: a first process for heating a treatment room for implementing this treatment process, and forming a metal vapor environment in the treatment room by evaporating the metal evaporation material preliminarily arranged in this treatment room; and a second process for feeding the raw material kept at a temperature lower than the temperature in the treatment room, and selectively sticking the metal evaporation material to the surface of the raw material by the temperature difference between the inside of the treatment room and the raw material while moving the raw material in this treatment room. PCOPYRIGHT: (C)2008,JPO&INPIT