期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 496, 期 1-2, 页码 423-428出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2010.01.155
关键词
Mechanical alloying; Microstructure; Nanocrystalline; Magnetization
资金
- Armament Research Board, Defense Research Development Organization (DRDO), New Delhi, India
The mechanical alloying process has been used to prepare nanocrystalline Fe70-xCuxCo30 (x=0, 3, 6, and 10) alloy from powder mixture. The structure and magnetic properties were investigated through powder X-ray diffraction (XRD), electron microscopy and magnetization measurements. The XRD patterns show a bcc crystal structure with lattice constant 0.2865 nm and crystallite size (D) of 15 nm evolves on 60 h milling in the case of Fe-Co alloy. But it is found that Cu speeds up the formation of bcc phase with finer microstructure (D=7 nm for x=10). Increase in microstrain is observed with the milling time and also with Cu concentration. The magnetic measurements show a contrasting saturation magnetization and coercivity (H-C) for the case of samples having lower (x <= 3) and higher (x>3) Cu content in Fe-Co alloys. These variations are explained on the basis of crystallite size and strain variations in the samples during milling. Present results indicate that a nonmagnetic inclusion enhances the soft magnetic properties due to improved microstructure, which is consistent with random anisotropy model. (C) 2010 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据