Low remanence temperature coefficient Sm1-xErx(Co,Fe,Cu,Zr)z magnets operating up to 400℃

作     者：Tian-Li Zhang Bo Zhang Hui Wang Cheng-Bao Jiang Zhi-Hong Zhang Xiao-Qing Wang Wei Zhang Tian-Li Zhang;Bo Zhang;Hui Wang;Cheng-Bao Jiang;Zhi-Hong Zhang;Xiao-Qing Wang;Wei Zhang

作者机构：School of Materials Science and EngineeringBeihang UniversityBeijing100191China State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive UtilizationBaotou Research Institute of Rare EarthsBaotou014030China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2020年第39卷第1期

页      面：70-75页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financially supported by the National Natural Science Foundation of China(Nos.51761145026 and 51471016) the Beijing Natural Science Foundation(No.2151002) 

主　　题：Permanent magnets Low remanence temperature coefficient Er doped Magnetic performance characterization 

摘      要：Er-doped Sm1-xErx(CobalFe0.15Cu0.08Zr0.03)7.8(x=0,0.1,0.2,0.3)magnets with a low remanence temperature coefficient were prepared by powder metallurgy *** influence of Er content on the remanence and microstructure was investigated.X-ray diffractometer(XRD)analysis showed that the magnets with different Er contents consist of 2:17 R phase and 1:5 H *** electron microscopy(SEM)analysis showed that the composition of the matrix is consistent with stoichiometric composition and no obvious precipitated phase *** the increase in doped Er amount,the temperature stability of Sm1-xErx(CobalFe0.15Cu0.08Zr0.03)7.8(x=0,0.1,0.2,0.3)is getting *** x is up to 0.3,the magnets with a low remanence temperature coefficient are obtained and the remanence descends tardily from 0.86 to 0.80 T as the temperature rises from room temperature to 400℃.These results indicate that Er substitution for Sm in SmCobased permanent magnets together with optimal composition and proper heat treatment could achieve a desired magnetic performance combined with high thermal stability.