High coercivity Nd-Ce-Fe-B nanostructured ribbons prepared from melt spinning technique

作     者：Liang Zha Zhou Liu Hao Chen Mingzhu Xue Guanyi Qiao Shilei Ding Xin Wen Meiling Zhang Youfang Lai Wenyun Yang Jingzhi Han Dong Zhou Chenyao Zhu Jinbo Yang 

作者机构：State Key Laboratory for Mesoscopic PhysicsSchool of PhysicsPeking UniversityBeijing100871China Institute of International EconomyUniversity of International Business and EconomicsBeijing100029China Functional Materials Research Institut5Central Iron&Steel Research Institut5Beijing100081China Robotics Research GroupCollege of EngineeringPeking UniversityBeijing100871China Collaborative Innovation Center of Quantum MatterBeijing100871China Beijing Key Laboratory for Magnetoelectric Materials and DevicesBeijing100871China 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2019年第37卷第10期

页      面：1053-1058页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：Project supported by the National Key Research and Development Program of China(2016YFB0700901) National Natural Science Foundation of China(51731001,11675006,51371009) 

主　　题：Nd-Fe-B alloy Ce substitution Coercivity Rare earths 

摘      要：The Ce-substituted(Nd1-xCex)12.2 Fe81.6 B6.2(x=0.0, 0.2, 0.4, 0.6) nanocrystalline ribbons were prepared by annealing amorphous ribbons from melt spinning. It is found that all ribbons are in a multiphase state consisting of a-Fe phase, Nd(Ce)-rich phases and RE2 Fe14 B(RE = Nd, Ce) phases. However, the coercivity of all annealed ribbons can reach a considerably high value without doping any heavy rare earth or other coercivity enhanced elements. A strong intergranular exchange coupling appears in these nanocrystalline ribbons. The Nd12.2 Fe81.6 B6.2 ribbons with multiphase have a coercivity of about 11.3 k Oe, and the coercivity decreases slightly with increasing Ce content. A coercivity of 7.5 kOe can be obtained when60 at% of Nd is replaced by Ce(x = 0.6) due to the grain refinement and the strong intergranular exchange coupling. This provides a practical approach of fabricating high coercivity Ce-substituted Nd-Fe-B materials.