Investigation on friction and wear performance of volcano-shaped textured PVD coating

• Published in: Surface & coatings technology Vol. 431; p. 128044
• Main Authors: Yang, Jie, Fu, Hao, He, Yuyang, Gu, Zehui, Fu, Yonghong, Ji, Jinghu, Zhang, Yanhu, Zhou, Yun
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 15.02.2022; Elsevier BV
• Subjects: Adhesive wear; Coating; Coefficient of friction; Friction; Friction and wear; Friction reduction; Mechanical properties; PVD coating; Starved lubrication; Surface layers; Texture; Tribology; Volcano-shaped laser texture; Volcanoes; Wear tests; Volcano-shaped laser texture; Friction and wear; Starved lubrication; PVD coating
• ISSN: 0257-8972; 1879-3347
• DOI: 10.1016/j.surfcoat.2021.128044

This study aims to investigate friction and wear performance of a novel volcano-shaped textured PVD coating, hoping to find the influence mechanism of volcano-shaped texture on the tribological behavior of textured coated surface. The volcano-shaped texture was fabricated on the sample surface by laser, and then PVD coating was deposited. For samples with different texture diameters or texture area ratios, reciprocating pin-on-disk wear tests were conducted to study tribological properties. After tests, wear topographies of samples and counter pins were observed to analyze wear details. The results showed volcano-shaped texture with suitable diameters and area ratios was conducive to lowering friction coefficient and reducing adhesive wear. The optimal texture diameter and area ratio were 310 μm and 25%, respectively. Meanwhile, the texture with large area ratios increased friction. These results indicated this texture's potential for friction control. Finally, the influence mechanism of volcano-shaped texture was proposed. [Display omitted] •The volcano-shaped texture can both decrease and increase friction.•There exists optimal diameter and area ratio of volcano-shaped texture to achieve best friction and wear performance.•Tribo-film formed on the convex area reduced texture wear.•Influence mechanism of volcano-shaped textured PVD coating on the friction and wear performance was studied.