公开(公告)号：US20200263280A1

公开(公告)日：2020-08-20

申请号：US16791088

申请日：2020-02-14

Applicant: GRIREM ADVANCED MATERIALS CO., LTD.

Inventor： Yang LUO ,  Xiao LIN ,  Guiyong WU ,  Jiajun XIE ,  Zilong WANG ,  Wenlong YAN ,  Zhongkai WANG ,  Dunbo YU

IPC: C22C38/00 ,  H01F1/059 ,  H01F41/02 ,  B22F9/04 ,  B22F1/00

Abstract: The present disclosure discloses an yttrium (Y)-added rare-earth permanent magnetic material and a preparation method thereof. A chemical formula of the material expressed in atomic percentage is (YxRE1-x)aFebalMbNc, wherein 0.05≤x≤0.4, 7≤a≤13, 0≤b≤3, 5≤c≤20, and the balance is Fe, namely, bal=100-a-b-c; RE represents a rare-earth element Sm, or a combination of the rare-earth element Sm and any one or more elements of Zr, Nd and Pr; M represents Co and/or Nb; and N represents nitrogen. In the preparation method, the rare-earth element Y is utilized to replace the element Sm of a samarium-iron-nitrogen material. By regulating a ratio of the element Sm to the element Y, viscosity of an alloy liquid can be reduced, and an amorphous forming ability of the material is enhanced.