Research on preparing compact bulk nanocomposite Nd2Fe14B/α-Fe magnetic materials by hot extrusion

被引：7
|
作者：
Wang, Ying [1 ]
Wang, Erde [1 ]
机构：
[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2007年 / 312卷 / 01期
关键词：
bulk nanocomposite Nd2Fe14B/alpha-Fe alloys; amorphous powders; magnetic properties; microstructure;
D O I：
10.1016/j.jmmm.2006.09.031
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, compact bulk nanocomposite Nd2Fe14B/alpha-Fe magnetic materials were prepared by hot extrusion of amorphous and nanocrystalline powders, which were prepared by high-energy ball-milling (HEBM) of the Nd2Fe14 B-type hard magnetic phase with 20 vol% of alpha-Fe as soft magnetic phase. The extrusion temperature has important influence on magnetic properties and microstructure of magnetic materials. The results show that the grain size of Nd2Fe14B and alpha-Fe phase increases steadily with increasing extrusion temperature. Furthermore, optimal extrusion temperature of 1223 K occurs, at which the highest magnetic properties and relative density can be obtained. (C) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：220 / 223
页数：4
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