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：US11495376B2

公开(公告)日：2022-11-08

申请号：US16612294

申请日：2018-06-20

Applicant: GRIREM ADVANCED MATERIALS CO., LTD. ,  GUOKE RE ADVANCED MATERIALS CO., LTD.

Inventor： Yang Luo ,  Hongbin Zhang ,  Zhou Hu ,  Dunbo Yu ,  Ningtao Quan ,  Yuanfei Yang ,  Wenlong Yan ,  Jiajun Xie

IPC: B22F1/02 ,  H01F1/057 ,  C22C38/00 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  B22F1/16

Abstract: The present invention discloses rare earth-bonded magnetic powder and a preparation method therefor. The bonded magnetic powder is of a multilayer core-shell structure, and comprises a core layer and an antioxidant layer (3), wherein the core layer is formed by RFeMB, R is Nd and/or PrNd, and M is one or more of Co, Nb, and Zr; and the core layer is coated with an iron-nitrogen layer (2). In addition, the present invention also discloses the preparation method for the rare earth-bonded magnetic powder and a bonded magnet. The oxidation and corrosion of magnetic raw powder during phosphorization and subsequent treatment process are effectively prevented, thereby further improving the long-term temperature resistance and environmental tolerance of the material.

公开(公告)号：US12129532B2

公开(公告)日：2024-10-29

申请号：US16612290

申请日：2018-06-20

Applicant: GRIREM ADVANCED MATERIALS CO., LTD. ,  GUOKE RE ADVANCED MATERIALS CO., LTD.

Inventor： Yang Luo ,  Dunbo Yu ,  Jiajun Xie ,  Caohuan Zhang ,  Ningtao Quan ,  Yuanfei Yang ,  Haijun Peng

IPC: H01F41/02 ,  B22F9/04 ,  C22C33/02 ,  C22C38/00 ,  B82Y25/00 ,  B82Y40/00

CPC classification number: C22C33/0278 ,  B22F9/04 ,  C22C38/005 ,  H01F41/0293 ,  B22F2009/047 ,  B22F2009/048 ,  B82Y25/00 ,  B82Y40/00 ,  C22C2202/02 ,  B22F2998/10 ,  B22F9/04 ,  B22F1/10 ,  B22F3/02

Abstract: The present invention discloses an yttrium-added rare earth permanent magnet material and a preparation method therefor. The chemical formula of the material is expressed as (YxRe1-x)aFe100-a-b-cMbBc according to the mass percentage, wherein 0.05≤x≤0.5, 20≤a≤28, 0.5≤b≤2, 0.5≤c≤1.5, Re is Nd and/or Pr, and M is Al and/or Nb. According to the present invention, the relatively surplus and inexpensive rare earths yttrium and cerium are used to replace Nd and/or Pr in NdFeB. By controlling the ratio of the rare earth elements such as yttrium, cerium and neodymium, and adding an appropriate amount of Nb and/or Al element, the rare earth elements are used in a comprehensive and balanced manner while better magnetic properties are maintained.

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：US10811175B2

公开(公告)日：2020-10-20

申请号：US15796153

申请日：2017-10-27

Applicant: GRIREM ADVANCED MATERIALS CO., LTD.

Inventor： Yang Luo ,  Chao Yuan ,  Kuo Men ,  Ningtao Quan ,  Hongbin Zhang ,  Wenlong Yan ,  Dunbo Yu ,  Yuanfei Yang

IPC: H01F1/055 ,  B22F9/04 ,  C22C33/02 ,  C22C1/04 ,  H01F1/057 ,  C22C1/03 ,  C22C28/00 ,  C22C38/00 ,  C22C38/10

Abstract: An alloy material, a bonded magnet, and a modification method of a rare-earth permanent magnetic powder are provided by the present application. A melting point of the alloy material is lower than 600° C. and a composition of the alloy material by an atomic part is RE100-x-yMxNy, wherein RE is one or more of non-heavy rare-earth Nd, Pr, Sm, La and Ce, M is one or more of Cu, Al, Zn and Mg, N is one or more of Ga, In and Sn, x=10-35 and y=1-15.

公开(公告)号：US20180182517A1

公开(公告)日：2018-06-28

申请号：US15796153

申请日：2017-10-27

Applicant: GRIREM ADVANCED MATERIALS CO., LTD.

Inventor： Yang Luo ,  Chao Yuan ,  Kuo Men ,  Ningtao Quan ,  Hongbin Zhang ,  Wenlong Yan ,  Dunbo Yu ,  Yuanfei Yang

IPC: H01F1/055 ,  C22C38/00 ,  C22C38/10 ,  C22C28/00 ,  C22C1/03 ,  B22F9/04

Abstract: An alloy material, a bonded magnet, and a modification method of a rare-earth permanent magnetic powder are provided by the present application. A melting point of the alloy material is lower than 600° C. and a composition of the alloy material by an atomic part is RE100-x-yMxNy, wherein RE is one or more of non-heavy rare-earth Nd, Pr, Sm, La and Ce, M is one or more of Cu, Al, Zn and Mg, N is one or more of Ga, In and Sn, x=10-35 and y=1-15.