Electrodeposited nickel-cobalt composite coating containing MoS2

被引：94
作者：
Shi, Lei [1 ]
Sun, Chufeng [1 ,2 ]
Liu, Weimin [1 ]
机构：
[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2008年 / 254卷 / 21期
基金：
中国国家自然科学基金;
关键词：
electrodeposition; MoS(2) particulates; composite coating; friction and wear behavior;
D O I：
10.1016/j.apsusc.2008.04.089
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Ni-Co/MoS(2) composite coatings were prepared by electrodeposition in a Ni-Co plating bath containing nano-sized MoS(2) particles to be co-deposited. The polarization behavior of the composite plating bath was examined on a PAR-273A potentiostat/galvanostat device. The friction and wear behaviors of the Ni Co/MoS(2) composite coatings were evaluated with UMT-2MT test rig in a ball-on-disk contact mode. The morphologies of the original and worn surfaces of the composite coatings were observed on scanning electron microscope (SEM). It was found that the introduction of MoS(2) nano-particulates in the electrolyte caused the shift towards larger negatives of the reduction potential of the Ni-Co alloy coating, and the co-deposited MoS(2) showed no significant effect on the electrodeposition process of the Ni-Co alloy coating. However, the co-deposited MoS(2) led to changes in the surface morphology and structure of the composite coating as well. Namely, the peak width of the Ni-Co solid solution for the composite coating is broader as compared to that of the Ni-Co alloy coating. The co-deposited MoS(2) particulates were uniformly distributed in the Ni-Co matrix and contributed to increase tribological properties of the Ni-Co alloy coating. (C) 2008 Elsevier B. V. All rights reserved.
引用
收藏
页码：6880 / 6885
页数：6
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