Microstructure and magnetic properties of nanosized Fe-Co alloy powders synthesized by mechanochemical and mechanical alloying process

被引：71

作者：

Lee, BH

Ahn, BS

Kim, DG

Oh, ST

Jeon, H

Ahn, J

Kim, YD ^{[1
]}

机构：

[1] Hanyang Univ, Div Mat Sci & Engn, Seoul 133791, South Korea

[2] Hanyang Univ, Dept Met & Mat Sci, Ansan 425791, South Korea

来源：

MATERIALS LETTERS | 2003年 / 57卷 / 5-6期

关键词：

nanomaterials; Fe-Co alloy; powder technology; hydrogen reduction; microstructure; magnetic materials;

D O I：

10.1016/S0167-577X(02)00938-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An optimum route to synthesize nanosized Fe-Co alloy powder with enhanced magnetic properties was investigated. Two methods of mechanical alloying (MA) and mechanochemical alloying (MCA) for developing a nanosized alloy powder were compared on the basis of the resulting microstructural characteristics and magnetic properties. The alloy powder, synthesized by MCA process with ball milling and hydrogen reduction using Fe2O3 and Co3O4 powders, showed ordered BCC structure with the grain size of 40 nm. Also, this powder exhibited low coercivity of 43 Oe and good permeability compared with MA powder. Enhanced magnetic properties of the MCA powder were explained by the formation of ordered structure and relaxation of internal strain. (C) 2002 Elsevier Science B.V All rights reserved.

引用

页码：1103 / 1107

页数：5

共 11 条

[1]

[Anonymous], 1978, ELEMENTS XRAY DIFFRA

[2] MECHANICAL AND MAGNETIC-PROPERTIES OF NANOCRYSTALLINE FECO ALLOYS PRODUCED BY MECHANICAL ALLOYING [J].