期刊
APPLIED SURFACE SCIENCE
卷 253, 期 4, 页码 2132-2137出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2006.04.018
关键词
pulse reversal electrodeposition; Ni-Co/nano-Al2O3 composite coating; microstructure; hardness; wear
Ni-Co/nano-Al2O3 (Ni-Co/Al2O3) composite coatings were prepared under pulse reversal current (PRC) and direct current (dc) methods respectively. The microstructure of coatings was characterized by means of XRD, SEM and TEM. Both the Ni-Co alloy and composite coatings exhibit single phase of Ni matrix with face-centered cubic (fcc) crystal structure, and the crystal orientation of the Ni-Co/Al2O3 composite coating was transformed from crystal face (200) to (111) compared with alloy coatings. The hardness, anti-wear property and macro-residual stress were also investigated. The results showed that the microstructure and performance of the coatings were greatly affected by Al2O3 content and the electrodeposition methods. With the increasing of Al2O3 content, the hardness and wear resistance of the composite coatings enhanced. The PRC composite coatings exhibited compact surface, high hardness, better wear resistance and lower macro-residual stress compared with that of the dc composite coatings. (c) 2006 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