Low-cost Sm0.7Y0.3Co5 sintered magnet produced by traditional powder metallurgical techniques  

作　　者：Dong-Tao Zhang Nai-Xing Cai Rong-Chun Zhu Wei-Qiang Liu Ming Yue 

机构地区：[1]College of Materials Science and Engineering,Key Laboratory of Advanced Functional Materials,Ministry of Education of China,Beijing University of Technology,Beijing 100124,China

出　　处：《Rare Metals》2020年第4期421-428,共8页稀有金属（英文版）

基　　金：financially supported by the State Key Program of Natural Science Foundation of China(Nos.51331003 and 51871005);the International S&T Cooperation Program of China(No.2015DFG52020)

摘　　要：RCo5(R=rare earth)sintered magnets have good temperature stability,so it is still widely used in high temperature field.In this paper,by the method of adding liquid phase SmCo1.7 to the main phase,Sm0.7Y0.3Co5 magnet was prepared by traditional powder metallurgical process.The results show the presence of a main phase RCo5,a minor phase R2 Co7,and a R-rich phase in the magnet.Contrasting the results of the XRD(X-ray diffraction)in random and oriented directions,the magnet has a well-aligned(00l)orientated texture,which is consistent with the result of the electron backscattered diffraction(EBSD).The Sm0.7Y0.3Co5 sintered magnet has good magnetic properties as remanence(Br)is 0.96 T,the coercivity(Hcj)is 1201.96 kA·m-1,and maximum magnetic energy product((BH)max)is 175.16 kJ m-3.

关 键 词：Sm0.7Y0.3Co5 Sintered magnets LOW-COST Magnetic properties RCo5 

分 类 号：TF125.8[冶金工程—粉末冶金]