Magnetic microstructure and magnetic properties of spark plasma sintered NdFeB magnets

被引：19

作者：

Huang, Y. L. ^{[1
]}

Wang, Y. ^{[1
]}

Hou, Y. H. ^{[1
]}

Wang, Y. L. ^{[1
]}

Wu, Y. ^{[1
]}

Ma, S. C. ^{[1
]}

Liu, Z. W. ^{[2
]}

Zeng, D. C. ^{[2
]}

Tian, Y. ^{[3
]}

Xia, W. X. ^{[3
]}

Zhong, Z. C. ^{[1
]}

机构：

[1] Nanchang Hangkong Univ, Sch Mat Sci & Engn, Nanchang 330063, Peoples R China

[2] S China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Guangdong, Peoples R China

[3] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Magnet Mat & Devices, Ningbo 315201, Zhejiang, Peoples R China

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2016年 / 399卷

基金：

中国国家自然科学基金;

关键词：

Magnetic materials; Microstructure; Magnetic domain; NdFeB; Spark plasma sintering; MECHANISM;

D O I：

10.1016/j.jmmm.2015.09.079

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nanocrystalline NdFeB magnets were prepared by spark plasma sintering (SPS) technique using meltspun ribbons as starting materials. A distinct two-zone structure with coarse grain zone and fine grain zone was formed in the SPSed magnets. Multi-domain particle in coarse grain zone and exchange interaction domain for fine grain zone were observed, Intergranular non-magnetic phase was favorable to improve the coercivity due to the enhancement of domain wall pinning effects and increased exchange-decouple. The remanent polarization of 083 T, coercivity of 1516 kA/m, and maximum energy product of 118 kJ/m(3) are obtained for an isotropic magnet. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：175 / 178

页数：4

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