Microstructural design in LaCe misch-metal substituted 2:14:1-type sintered magnets by dual-alloy method

作     者：Kan Chen Shuai Guo Hongliang Zhao Xiaodong Fan Fengchun Fan Guangfei Ding Renjie Chen Xiwen Zheng Aru Yan Kan Chen;Shuai Guo;Hongliang Zhao;Xiaodong Fan;Fengchun Fan;Guangfei Ding;Renjie Chen;Xiwen Zheng;Aru Yan

作者机构：Key Lab of Magnetic Materials and DevicesNingbo Institute of Macerials Technology and EngineeringChinese Academy of SciencesNingbo 315201China Ningbo Tongchuang Strong Magnet Material Co.Ltd.Ningbo 315201China 

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

年 卷 期：2021年第39卷第3期

页      面：305-311,I0003页

核心收录：

学科分类：08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Project supported by Plan of National Key Research and Development(2016YFB0700903) Major projects of Haishu District of Ningbo(201803A005) 

主　　题：Misch-metal Microstructural design Sintered magnet Rare earths 

摘      要：LaCe-based sintered magnets with different microstructural features and distinct rare earth elemental distribution were designed by dual-alloy *** sample prepared by fine LaCe-containing powder and coarse LaCe-free powder possesses higher remanence(~13.41 kGs),whereas another sample prepared by fine LaCe-free powder and coarse LaCe-containing powder possesses higher coercivity(~5.67 kOe).Additionally,these samples are with the same nominal compositions and their elemental distribution features are obviously different in matrix grains *** remanence difference is mainly affected by the saturation magnetization difference caused by the distribution variation of the rare earth elements at the matrix *** coercivity difference is affected by the component of the grain boundary phase between the adjacent grains and the distribution variation of the rare earth elements at the matrix *** findings may provide a new prospect for the utilization of LaCe mischmetal in 2:14:1-type permanent magnets.