表面技术2017，Vol.46Issue(12)：55-61,7.DOI:10.16490/j.cnki.issn.1001-3660.2017.12.011
恒电位对TiN涂层在人工海水环境中腐蚀磨损的影响
Effects of Constant Potential on Corrosive Wear of TiN Coating in Artificial Seawater Environment
摘要
Abstract
The work aims to study effects of different constant potential on corrosive wear behavior of TiN coating in artifi-cial seawater environment. TiN coating was deposited on 316 stainless steel with multi-arc ion plating system. Phase structure,hardness, adhesion, electrochemical properties, friction coefficient and wear rate were evaluated by performing XRD test, na-noindentation hardness test, film-substrate adhesion test, electrochemical workstation test, abrasion test at different constant po-tential and section profile test of coating grinding crack were evaluated. Surface morphology, section morphology and grinding crack morphology of the coatings were analyzed with SEM. Under the friction condition, open circuit potential declined gradu-ally with the increase of sliding friction time. At different constant voltage (-1 V, -0.5 V, OCP, 0 V), average friction coefficient was 0.392, 0.416, 0.324, 0.348, respectively. Wear rate was 1.8117×10-6mm3/(N·m), 3.1123×10-6mm3/(N·m), 4.5958×10-6 mm3/(N·m), 7.7724×10-6mm3/(N·m), respectively. At 0.5 V, the coating was worn out. Main corrosive wear mechanisms of TiN coating in artificial seawater were abrasive wear and fatigue pitting. With the increase of load potential, wear volume and wear rate of TiN coating increase simultaneously. At the potential of (-1 V, -0.5 V, OCP), as corrosion-accelerated wear loss accounts for a higher proportion of total loss, namely 0%, 41.78%, 61.77% and 75.61%. At 0 V, wear-accelerated loss is gener-ated on TiN coating, which accounts for about 6.1% of the total loss.关键词
TiN涂层/开路电位/摩擦系数/腐蚀/磨损/人工海水Key words
TiN coating/OCP/friction coefficient/corrosion/wear/artificial seawater分类
矿业与冶金引用本文复制引用
汪陇亮,王永欣,单磊,孙润军..恒电位对TiN涂层在人工海水环境中腐蚀磨损的影响[J].表面技术,2017,46(12):55-61,7.基金项目
国家973计划子课题(2014CB643302) （2014CB643302）
国家自然科学基金(51475449)Supported by the National Key Basic Research Program (973) Sub-project of China (2014CB643302), the National Natural Science Foundation of China (51475449) （51475449）
