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海洋装备大量关键金属运动部件同时承受摩擦与腐蚀作用,其表面防护涂层在海水环境下的抗磨擦-腐蚀性能成为考察涂层性能优劣的关键.本文中采用摩擦-腐蚀试验机原位实时监测了DLC、Cr-DLC、Cr N与Ti N四种涂层与氧化铝陶瓷摩擦副在人工海水环境下的开路电位和摩擦系数等腐蚀-磨损特性,并采用动电位扫描法测试了四种涂层在腐蚀和摩擦-腐蚀过程中的电化学行为,综合分析了涂层在海水介质中的磨损-腐蚀交互机制.研究结果表明:非晶结构的碳基涂层在海水介质中具有优异的抗腐蚀和抗摩擦-腐蚀性能,其中金属铬的掺入能够进一步提高DLC涂层的抗摩擦-腐蚀性能;而氮化物基涂层的粗大柱状晶结构显著削弱了其在海水环境中的抗摩擦-腐蚀性能.
A large number of key metal moving parts of marine equipment are subject to friction and corrosion at the same time, and the anti-friction-corrosion performance of the surface protective coating under seawater environment is the key to inspect the coating performance.In this paper, the friction-corrosion tester in situ real-time The corrosion-wear characteristics of open circuit potential and friction coefficient of DLC, Cr-DLC, CrN and TiN four kinds of coating and alumina ceramic friction pair in artificial seawater environment were monitored, and four kinds of corrosion-wear characteristics were tested by potentiodynamic scanning The electrochemical behavior of the coating during corrosion and friction-corrosion processes was analyzed, and the wear-corrosion interaction mechanism of the coating in seawater was analyzed.The results show that the amorphous structure of the carbon-based coating has excellent Anti-corrosion and anti-friction-corrosion properties, in which the incorporation of chromium metal can further improve the anti-friction-corrosion properties of DLC coating; while the coarse columnar crystal structure of nitride-based coating significantly weakens its anti-friction in seawater environment - Corrosion properties.