Current tribocorrosion research of metallic materials and their surface protective coatings mainly focuses on their short-term properties,with test time of 0.5-2.0 h and a sliding distance 50-500 m,which may significantly deviate from the practical long-term service condition and thus cause a catastrophe of marine equipments.In this study,three carbon-based multilayer coatings(Ti/DLC,TiCx/DLC,and Ti-TiCx/DLC)were deposited on S32750 substrates,and both short-term and long-term tribocorrosion behaviors were investigated.The experimental results indicate that the coatings substantially improve the tribocorrosion resistance of the S32750 stainless steel.During the short-term tribocorrosion test,TiCx/DLC exhibited the best tribocorrosion resistance owing to its high hardness.During the long-term tribocorrosion test,however,Ti-TiCx/DLC coating indicated the best anti-tribocorrosion performance owing to its excellent fracture toughness together with high hardness.Moreover,under 5 N,Ti-TiCx/DLC can withstand a long-term test of more than 24 h.Additionally,under a higher load of 20 N,the Ti-TiCx/DLC with a corresponding sliding distance of approximately 1,728 m maintained a low friction coefficient of approximately 0.06.However,the coating was completely worn out;this is attributable to the formation of tribocorrosion products consisting of graphitized carbon and nanocrystalline FexOy.

Hao LI;Linlin LIU;Peng GUO;Lili SUN;Jing WEI;Yingrui LIU;Shuyu LI;Shuyuan WANG;Kwang-Ryeol LEE;Peiling KE;Aiying WANG

Key Laboratory of Marine Materials and Related Technologies,Zhejiang Key Laboratory of Marine Materials and Protective Technologies,Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China;Computational Science Center Korea Institute of Science and Technology,Seoul 136-791,Republic of Korea

摩擦（英文）

[1]Hao LI;Linlin LIU;Peng GUO;Lili SUN;Jing WEI;Yingrui LIU;Shuyu LI;Shuyuan WANG;Kwang-Ryeol LEE;Peiling KE;Aiying WANG-.Long-term tribocorrosion resistance and failure tolerance of multilayer carbon-based coatings)[J].摩擦（英文）,2022(10):1707-1721

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