- 专利标题： Preparation method of a rare earth anisotropic bonded magnetic powder
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申请号： US17090703申请日： 2020-11-05
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公开(公告)号： US11987868B2公开(公告)日： 2024-05-21
- 发明人: Yang Luo , Zilong Wang , Yuanfei Yang , Zhou Hu , Dunbo Yu , Jiajun Xie , Yifan Liao , Zhongkai Wang
- 申请人： GRIREM ADVANCED MATERIALS CO., LTD. , GRIREM HI-TECH CO., LTD.
- 申请人地址： CN Beijing
- 专利权人： GRIREM ADVANCED MATERIALS CO., LTD.,GRIREM HI-TECH CO., LTD.
- 当前专利权人： GRIREM ADVANCED MATERIALS CO., LTD.,GRIREM HI-TECH CO., LTD.
- 当前专利权人地址： CN Beijing; CN Langfang
- 代理机构： Westbridge IP LLC
- 优先权： CN 1911076252.1 2019.11.06
- 主分类号： B22F1/142
- IPC分类号： B22F1/142 ; B22F9/04 ; C22C1/10 ; C22C38/00 ; H01F1/057
摘要：
A method for preparing a rare earth anisotropic bonded magnetic powder, comprises the following steps: (1) preparing raw powder with RTBH as the main component, wherein, R is Nd or Pr/Nd, and T is a transition metal containing Fe; (2) adding La hydride or Ce hydride and copper powder to the raw powder to form a mixture; (3) subjecting the mixture to atmosphere diffusion heat treatment to give the rare earth anisotropic bonded magnetic powder.
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