Atom probe studies of microstructural evolution in Nd-Fe-B-based nanocomposite magnets

被引：16

作者：

Hono, K ^{[1
]}

Ping, DH ^{[1
]}

机构：

[1] Natl Res Inst Met, Tsukuba, Ibaraki 3050047, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2001年 / 304卷

关键词：

nanocrystallization; remanence; quinary;

D O I：

10.1016/S0921-5093(00)01447-7

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effect of Cu and Nb additions on the nanocrystallization process of Nd-Fe-B-based alloys are discussed based on recent atom probe results. Cu atom clusters are formed on annealing the amorphous precursors prior to the primary crystallization reaction in Nd-Fe-B-based amorphous alloys. These Cu clusters serve as heterogeneous nucleation sites for Fe3B primary crystals, thereby reducing the grain size of Fe3B/Nd2Fe14B nanocomposites. However, Cu addition does not give any influence on the grain size of alpha -Fe/Nd2Fe14B nanocomposite. In the latter ease, Nb does pray an essential role as the grain growth inhibitor. The reason for the variations of the effect of Cu and Nb in Nd-Fe-B-based amorphous alloys is discussed based on atom probe results. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：81 / 87

页数：7

共 13 条

[1] On the formation of nanocrystals in the soft magnetic alloy Fe73.5Nb3Cu1Si13.5B9 [J].