全高丰度稀土(Ce, La, Y)-Fe-B永磁的研究现状和未来发展

刘仲武, 周帮, 廖雪峰, 何家毅

Research Status and Future Development of (Ce, La, Y)-Fe-B Permanent Magnets Based on Full High-Abundance Rare Earth Elements

LIU Zhongwu, ZHOU Bang, LIAO Xuefeng, HE Jiayi

图1 稀土元素的地壳丰度、价格和各自在Nd-Fe-B磁体中的使用率[4~7]，高丰度稀土RE2Fe14B化合物的相关性能参数[3,9]以及各类永磁材料的性能对比[11]

Fig.1 Relative abundance and utilization rate of rare earth (RE) element[4-6] (a), RE metals and the corresponding RE oxides price[7] (b), comparison of RE2Fe14B (RE = Ce, La, and Y) compounds in intrinsic magnetic properties, magnetic hardness parameter and formation energy, the data are extracted from an online database[3,9] (c), and comparison of the properties of different types of permanent magnets[11] (d) (Efor—formation energy, к— magnetic hardness parameter, Js—saturation magnetic polarization, TC—Curie temperature, HA—anisotropy field, Jr—remanence, Hcj—intrinsic coercivity)