Magnetic properties and microstructure of Nd-Fe-B sintered magnets with DyHx addition

被引：23
|
作者：
Liu, Y. H. [1 ,2 ]
Guo, S. [1 ,2 ]
Liu, X. M. [1 ,2 ]
Lee, D. [1 ,2 ]
Yan, A. R. [1 ,2 ]
机构：
[1] Chinese Acad Sci, Key Lab Magnet Mat & Devices, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China
[2] Chinese Acad Sci, Zhejiang Prov Key Lab Magnet Mat & Applicat Techn, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China
来源：
JOURNAL OF APPLIED PHYSICS | 2012年 / 111卷 / 07期
基金：
中国国家自然科学基金; 国家高技术研究发展计划(863计划);
关键词：
COERCIVITY; NDFEB;
D O I：
10.1063/1.3671426
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The effects of DyHx addition on magnetic properties and microstructure of Nd-Fe-B sintered magnets were investigated. In order to obtain the best magnetic properties, the effects of sintering temperature and annealing time on magnetic properties were also investigated. The results shown that the addition of DyHx can affect the microstructure, increase the intrinsic coercivity (H-cj), and improve the thermal stability of sintered Nd-Fe-B magnets. The remanence (B-r) and H-cj showed different variation trends as sintering temperature changes. Within a reasonable range, sintering at higher temperature can get higher B-r but lower H-cj. The H-cj was further increased by heat treatment and annealing time was extended. (C) 2012 American Institute of Physics. [doi:10.1063/1.3671426]
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页数：3
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