公开(公告)号：US20180268971A1

公开(公告)日：2018-09-20

申请号：US15868063

申请日：2018-01-11

Applicant: GRIREM ADVANCED MATERIALS CO., LTD.

Inventor： Guiyong Wu ,  Yang Luo ,  Hongwei Li ,  Yuanfei Yang ,  Dunbo Yu ,  Ningtao Quan ,  Chao Yuan ,  Wenlong Yan

IPC: H01F1/059 ,  H01F41/02 ,  C22C38/00 ,  C22C38/14 ,  C22C38/04 ,  C22C38/06 ,  C22C38/02 ,  C22C38/10 ,  C22C38/12 ,  C22C38/28

Abstract: Provided are a highly thermostable rare-earth permanent magnetic material, a preparation method thereof and a magnet containing the same. A composition of the rare-earth permanent magnetic material by an atomic percentage is as follows: SMxRaFe100-x-y-z-aMyNz, wherein R is at least one of Zr and Hf, M is at least one of Co, Ti, Nb, Cr, V, Mo, Si, Ga, Ni, Mn and Al, x+a is 7-10%, a is 0-1.5%, y is 0-5% and z is 10-14%.

公开(公告)号：US11101057B2

公开(公告)日：2021-08-24

申请号：US15868063

申请日：2018-01-11

Applicant: GRIREM ADVANCED MATERIALS CO., LTD.

Inventor： Guiyong Wu ,  Yang Luo ,  Hongwei Li ,  Yuanfei Yang ,  Dunbo Yu ,  Ningtao Quan ,  Chao Yuan ,  Wenlong Yan

IPC: C22C38/00 ,  H01F1/059 ,  C23C8/24 ,  H01F1/08 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  C22C38/28 ,  C23C8/26 ,  H01F41/02 ,  C22C33/02 ,  B22F9/04 ,  B22F9/08 ,  B22F3/02 ,  B22F5/00 ,  B22F1/00

Abstract: Provided are a highly thermostable rare-earth permanent magnetic material, a preparation method thereof and a magnet containing the same. A composition of the rare-earth permanent magnetic material by an atomic percentage is as follows: SmxRaFe100-x-y-z-aMyNz, wherein R is at least one of Zr and Hf, M is at least one of Co, Ti, Nb, Cr, V, Mo, Si, Ga, Ni, Mn and Al, x+a is 7-10%, a is 0-1.5%, y is 0-5% and z is 10-14%.

公开(公告)号：US11505852B2

公开(公告)日：2022-11-22

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.