Effect of rare earth content on TbF3 diffusion in sintered Nd-Fe-B magnets by electrophoretic deposition

被引：70
作者：
Cao, Xuejing [1 ,2 ]
Chen, Ling [1 ,2 ]
Guo, Shuai [1 ,2 ]
Fan, Fengchun [3 ]
Chen, Renjie [1 ,2 ]
Yan, Aru [1 ,2 ]
机构：
[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Zhejiang Prov Key Lab Magnet Mat & Applicat Tech, Ningbo 315201, Zhejiang, Peoples R China
[2] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, CAS Key Lab Magnet Mat & Devices, Ningbo 315201, Zhejiang, Peoples R China
[3] Ningbo Tongchuang Strong Magnet Mat Co Ltd, Ningbo 315171, Zhejiang, Peoples R China
来源：
SCRIPTA MATERIALIA | 2017年 / 131卷
基金：
中国国家自然科学基金;
关键词：
Sintered Nd-Fe-B magnet; Electrophoretic deposition; TbF3; diffusion; Rare earth content; Core-shell microstructure; COERCIVITY ENHANCEMENT; PERMANENT-MAGNETS; MICROSTRUCTURE; DYF3;
D O I：
10.1016/j.scriptamat.2016.12.036
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The impact of starting magnets with different rare earth (RE) content on the coercivity and microstructural properties of TbF3 diffused sintered Nd-Fe-B magnets using electrophoretic deposition (EPD) method was investigated. In the diffused samples with the RE content of 30 wt, the coercivity achieved the largest enhancement and the increment was 801 kA/m with less than 0.81 wt.% Tb. Microstructure analysis suggested that higher RE content was helpful to the Tb diffusion process and further contributed to the higher coercivity. Mechanism of coercivity enhancement and Tb diffusion was discussed based on the observation. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：24 / 28
页数：5
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