Highly thermostable rare-earth permanent magnetic material, preparation method thereof and magnet containing the same
AssigneeGrirem Advanced Materials Co., Ltd.
InventorsGuiyong Wu, Yang Luo, Hongwei Li, Yuanfei Yang, Dunbo Yu, Ningtao Quan, Chao Yuan, Wenlong Yan
Life of this patent
Estimating the term…
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%.
Claims20
A rare-earth permanent magnetic material, a composition of the rare-earth permanent magnetic material by an atomic percentage being as follows:
- SMxRaFe100x-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%.
Dependencies are inferred from the claim text.