摘要
研究了完全氮化的(Sm1-yCey)2Fe17Nx(y=0,0.20,0.33,0.45,0.50,0.67,0.80,1.00)粉末的磁性能和微观结构。当用33at%Ce代替Sm时,最大磁能积(BH)max从141.6 kJ/m3变为140.1 kJ/m3,几乎没有下降。相应地,性能/稀土价格比率提高了39.6%。根据能量色散光谱(EDS)分析,Ce倾向于分布在REFe3/REFe2晶界相中。XPS证实了(Sm1-yCey)2Fe17Nx中Ce离子的价态变化。
Magnetic properties and microstructure of fully nitrided(Sm1-yCey)2Fe17Nx(y=0,0.20,0.33,0.45,0.50,0.67,0.80,1.00)powders have been investigated.When 33 at%Ce is substituted for Sm,maximum energy product(BH)max changes from 141.6 kJ/m3 to 140.1 kJ/m3 with almost no decrease.Accordingly,performance/rare earth price ratio increases by 39.6%.According to the energy dispersive spectroscopy(EDS)analysis,Ce tends to be distributed in the REFe3/REFe2 grain boundary phase.Meanwhile,valence change of the Ce ion in(Sm1-yCey)2Fe17Nx was confirmed by XPS.
作者
徐健伟
郑精武
陈海波
乔梁
应耀
蔡伟
李旺昌
余靓
林旻
车声雷
Xu Jianwei;Zheng Jingwu;Chen Haibo;Qiao Liang;Ying Yao;Cai Wei;Li Wangchang;Yu Jing;Lin Min;Che Shenglei(Zhejiang University of Technology,Hangzhou 310014,China;Hangzhou Haisheng Technology Co.,Ltd,Hangzhou 310019,China;Ningbo Institute of Material Technology&Engineering,Chinese Academy of Sciences,Ningbo 315201,China;College of Materials Science and Engineering,Zhejiang University of Technology,Hangzhou 310014,China)
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2020年第10期3412-3418,共7页
Rare Metal Materials and Engineering
基金
State Key Laboratory of Rare Earth Permanent Magnetic Materials Opening Foundation(SKLREPM17OF06)
National Natural Science Foundation of China(U1802254,51871201)
Xinmiao Talent Planning of Zhejiang Province(2019R403055)。
