The effect of MM content in the magnetic (NdMM)FeB casting strips on microstructure and macroscopic

• 作 者: YU Xiaoqiang ZHU Minggang YUE Ming LIU Weiqiang HAN Rui ZHANG Jiuxing LI Wei
• 机 构: College of Materials Science and Engineering,Beijing University of Technology,Beijing 100124,China;D
• 出 处: 2016中国功能新材料学术论坛
• 发表日期: 2016年10期
• 关键词: MM casting strip microstructure MM2Fe14B saturation magnetization

　　The MM substituted[Nd(1-x)MMx]FeB casting strips were prepared with induction melting and strip casting furnace.The saturation magnetization (Ms) and saturation magnetic field (Hs) decreased with the MM content (x).Microstructure and properties of magnetic (NdMM)FeB casting strips could be influenced by the MM substitution.With the more MM substitution in (NdMM)FeB casting strips,XRD analysis showed that the main phase MM2Fe14B was more difficult to derive and La2O3 and CeFe2 phases coexisted in MMFeB (when x=1) casting strips.When x was more than 0.6,the saturation magnetization (Ms) decreased slightly.However,the saturation magnetic field (Hs) dropped dramatically.The intrinsic coercivity of sintered magnets made of these casting strips would come down quickly as well,which is due to the distribution of La/Ce/Pr/Nd element in the different regions.