Coercivity enhancement of sintered Nd-Fe-B magnets by chemical bath deposition

被引：5
|
作者：
Zhang, Qiushuang [1 ,2 ]
Guo, Shuai [1 ]
Yang, Xiao [1 ,2 ]
Zeng, Jiling [1 ,2 ]
Cao, Xuejing [1 ]
Chen, Renjie [1 ]
Yan, Aru [1 ]
机构：
[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Magnet Mat & Devices, Ningbo 315201, Zhejiang, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
AIP ADVANCES | 2018年 / 8卷 / 05期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
D O I：
10.1063/1.5007267
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The chemical bath deposition (CBD) method is used to diffuse the heavy rare earth element in order to obtain the high coercivity magnets with low heavy rare earth element. The jet mill powders are soaked in the alcohol suspension of Dy(CH3CHOHCH3)(3) (Dy-ipa) so that Nd2Fe14B powder particles are surrounded by Dy-ipa homogeneously. By adding 1.0 wt. % Dy, the coercivity of magnet is increased from 14.47 kOe to 17.55 kOe with slight reduction of remanence after grain boundary diffusion (GBD) in the sintering and annealing processes. The temperature coefficient of coercivity optimizes from -0.629 %/degrees C to -0.605 %/degrees C as well as that of remanence improves from -0.108 %/degrees C to -0.100 %/degrees C. The CBD method is helpful for thermal stability and alignment either. The relation between the microstructure and the coercivity has been studied systematically. (C) 2018 Author(s).
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页数：5
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