Invention Grant
- Patent Title: Highly thermostable rare-earth permanent magnetic material, preparation method thereof and magnet containing the same
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Application No.: US15868063Application Date: 2018-01-11
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Publication No.: US11101057B2Publication Date: 2021-08-24
- Inventor: Guiyong Wu , Yang Luo , Hongwei Li , Yuanfei Yang , Dunbo Yu , Ningtao Quan , Chao Yuan , Wenlong Yan
- Applicant: GRIREM ADVANCED MATERIALS CO., LTD.
- Applicant Address: CN Beijing
- Assignee: GRIREM ADVANCED MATERIALS CO., LTD.
- Current Assignee: GRIREM ADVANCED MATERIALS CO., LTD.
- Current Assignee Address: CN Beijing
- Agency: Shumaker, Loop & Kendrick, LLP
- Agent James D. Miller
- Priority: CN201710161808.1 20170317
- Main IPC: C22C38/00
- 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%.
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