| 简介 |
This R-T-B rare earth sintered magnet is an R-Fe-B rare earth sintered magnet which has as the main phase R2Fe14B-based compound crystal particles containing a light rare earth element RL (including at least one of Nd and Pr) as the main rare earth element R, and which contains a heavy rare metal element RH (including at least one of Dy and Tb). Prior to removal of the surface layer, this R-T-B rare earth sintered magnet has no layer rich in rare-earth element R on the surface layer, has a site where the coercivity gradually decreases from the surface layer towards the center of the R-T-B rare earth sintered magnet, and the difference between the TRE amount from the surface layer up to 500μm towards the center of the R-T-B rare earth sintered magnet and the TRE amount in the center of the R-T-B rare earth sintered magnet is 0.1-1.0. |
客服热线：
手机版
二维码
