Corrosion-Wear Mechanism of Si-DLC Films in Nitric Acid Solution

被引：0
|
作者：
Xie M. [1 ,2 ]
Yang J. [3 ]
Zhang G. [1 ]
Xue Q. [1 ]
Cui X. [4 ]
机构：
[1] State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, Gansu
[2] University of Chinese Academy of Sciences, Beijing
[3] Join Crane Technology (Tianjin) Co Ltd, Tianjin
[4] Material Corrosion and Protection Key Laboratory of Sichuan Province, Sichuan University of Science and Engineering, Zigong, 643000, Sichuan
来源：
Zhang, Guangan (gazhang@licp.cas.cn) | 1600年 / Science Press卷 / 37期
基金：
中国国家自然科学基金;
关键词：
Corrosion-wear; DLC films; Friction; Nitric acid;
D O I：
10.16078/j.tribology.2017.04.013
中图分类号：
学科分类号：
摘要：
In this study, tribocorrosion behaviors of DLC and Si-DLC films in deionized water and nitric acid environment were investigated by the electrochemical workstation and tribometer. The potentiodynamic polarization and electrochemical impedance spectroscopy tests were performed to evaluate the electrochemical property of the two films. The wear volumes in different environments were used to investigate the corrosion-wear mechanism of DLC and Si-DLC films in nitric acid solution. The results indicate that doping of Si element in DLC films decreased the friction coefficient, while it also led to deterioration of corrosion protection property, due to the increasing corrosion current density of films in nitric acid solution. Corrosion-wear of films was determined mainly by mechanical wear and affected scarcely by electrochemical corrosion. The synergistic effect between mechanical action and electrochemical corrosion was also a significant factor during tribocorrosion, and accounted for nearly 4% of the total wear volume of DLC and Si-DLC films. © 2017, Science Press. All right reserved.
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页码：510 / 517
页数：7
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