ALLOY MATERIAL FOR R-T-B-TYPE RARE-EARTH PERMANENT MAGNET, PROCESS FOR PRODUCTION OF R-T-B-TYPE RARE-EARTH PERMANENT MAGNET, AND MOTOR

摘要

An excellent R-T-B type rare earth permanent magnet having a high coercive force (Hcj), in which a decrease in magnetization (Br) is suppressed, is obtained by a method for producing an R-T-B type rare earth permanent magnet using, as a raw material, an R-T-B type rare earth magnet alloy material including an R-T-B type alloy (wherein R is one kind, or two or more kinds selected from Nd, Pr, Dy and Tb, 4% by mass to 10% by mass of Dy or Tb being essentially contained in the R-T-B type alloy, T is metal containing essentially Fe, and B is boron) and a metal powder.