Improvement of the magnetic properties of nanocomposite permanent magnetic alloys with Dy and Ga substitutions

被引：5

作者：

Zhang, MG ^{[1
]}

Sun, G

Guo, DC

Jin, ZH

机构：

[1] Xian Jiaotong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China

[2] Taiyuan Heavy Machinery Inst, Dept Mat Sci, Taiyuan 030024, Peoples R China

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2002年 / 120卷 / 1-3期

基金：

上海市自然科学基金;

关键词：

magnetic materials; nanostructures; electron microscopy; x-ray diffraction; microstructure;

D O I：

10.1016/S0924-0136(01)01182-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The Dy and Ga substituted NdFeB nanocomposite permanent magnetic alloys with high magnetic properties have been prepared by appropriate wheel speed of melt-spinning and post-annealing treatment, Under optimal conditions, compared with the best magnetic properties of ternary NdFeB alloy of J(r) = 1.18T, H-ci = 379.5 kA/m and (BH)(max) = 119.5 kJ/m(3), the best magnetic properties of the alloy with Dy and Ga substitutions are J(r) = 1. 16 T, H-ci = 580.5 kA/m, and (BH)(max) = 162.7 kJ/m(3). The XRD and TEM results showed that each of two alloys consists of hard magnetic 2:14:1 phase and soft magnetic alpha-Fe phase. The grain size of the 2:14:1 phase is about equal in the two alloys. The grain size and content of alpha-Fe phase in Dy and Ga substituted alloy are finer and lower, respectively. (C) 2002 Elsevier Science BX All rights reserved.

引用

页码：265 / 269

页数：5

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