Microstructures and the magnetic properties of Fe3B/(Nd, Dy)2Fe14B nanocomposite microalloyed with Cu and Zr

被引：6
|
作者：
Kajiwara, K [1 ]
Hono, K
Hirosawa, S
机构：
[1] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058577, Japan
[2] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan
[3] Sumitomo Special Met Co Ltd, Osaka 6180013, Japan
来源：
MATERIALS TRANSACTIONS | 2001年 / 42卷 / 09期
关键词：
nanocomposite magnet; hard magnetic property; melt spinning; transmission electron microscopy; atom probe;
D O I：
10.2320/matertrans.42.1858
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of Zr and Cu addition to a Nd3.4Dy1Fe72.3B18.5Cr2.4Co2.4 alloy on the microstructure and the magnetic properties of Fe3B/Nd2Fe14B nanocomposite has been investigated by a three-dimensional atom probe (3DAP) and transmission electron microscopy (TEM). Addition of a small amount of Zr and/or Cu is effective in improving the hard magnetic properties of the base alloy. Cu atoms form clusters in the early stage of crystallization, and Zr atoms are segregated at the interfaces of Fe3B/Nd2Fe14B being rejected from the Fe3B soft magnetic phase on the optimal heat-treated condition. This causes refining the nanocomposite microstructure, resulting in improved hard magnetic properties compared to those of the base alloy.
引用
收藏
页码：1858 / 1861
页数：4
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