METHOD FOR MANUFACTURING RFeB BASED MAGNET

PROBLEM TO BE SOLVED : To provide a method for manufacturing a RFeB based magnet, capable of performing grain boundary diffusion treatment in the state of having a good contact with the surface of a base material consisting of a metal body including a rare earth element to be diffused and a RFeB based magnet. SOLUTION : A method for manufacturing a RFeB based magnet comprises : the base material preparation step of preparing a base material 11 having crystal grains including one or more kinds of rare earth elements R, Fe, and B as a principal component by sintering or hot plastic processing; the welding step of welding a R containing metal body 12 consisting of metal including one or more kinds of rare earth elements to be diffused being a rare earth element of a kind different from the rare earth element R included in the base material or the same kind on the surface of the base material 11; and the heating step of heating the base material 11 and the R containing metal body 12 at a predetermined temperature at which the rare earth element to be diffused diffuses into the base material 11. SELECTED DRAWING : Figure 1 COPYRIGHT : (C)2018, JPO&INPIT