公开(公告)号：US20230066150A1

公开(公告)日：2023-03-02

申请号：US17797976

申请日：2020-02-06

Applicant: LG ELECTRONICS INC. ,  NATIONAL INSTITUTE FOR MATERIALS SCIENCE

Inventor： Sunyong SONG ,  Seok NAMKUNG ,  Xin TANG ,  Hossein SEPEHRIAMIN ,  Tadakatsu OHKUBO ,  Kazuhiro HONO ,  Jiangnan LI

IPC: H01F1/057

Abstract: A rare-earth magnet according to an embodiment of the present invention comprises: a rare-earth magnet precursor including a composition of (R1(1-x)R2x)yFe(100-y-z-v-w)CozBvTMlw in which R1 comprises at least one of Nd or Pr, and R2 comprises Ce; and a diffusion metal including a composition of (LRE(100-p-q)HREp)TM2q, and diffused on the surface of the rare-earth magnet precursor, wherein the LRE in the diffusion metal can comprise light rare earth including Y, and the HRE can comprise heavy rare earth.