Anisotropic friction behaviour of highly oriented pyrolytic graphite

Environmental effect on the load-dependent friction behavior of a diamond-like carbon film

“…Among them, diamond-like carbon (DLC) films have been extensively studied for two decades due to their low deposition temperature, high hardness, superior surface finish, and unusual combination of high wear-resistance and low friction under a broad range of conditions [1,[7][8][9]. However, like other carbon materials [2][3][4][5], the friction behaviors of DLC films are susceptible to the test environments, especially the humidity therein [10][11][12]. Hydrogenated DLC films can give superlow friction coefficients in dry environments but relatively high friction coefficients when the humidity is high enough [10,11].…”

“…Various forms of carbon materials are used to regulate the process of friction and wear [1][2][3][4][5][6]. Among them, diamond-like carbon (DLC) films have been extensively studied for two decades due to their low deposition temperature, high hardness, superior surface finish, and unusual combination of high wear-resistance and low friction under a broad range of conditions [1,[7][8][9].…”

Wear resistant multiphase compound of Ti(C, O, N)/a-C:H nano composite film

“…Interlayer sp 2 planes have low shear resistance exhibiting low friction coefficient. Lubrication becomes more efficient in hydrogenated/oxygenated and presence of water vapor in sp 2 domains due to passivation of carbon dangling bonds [55,56]. This passivation mechanism is schematically represented in Fig.…”

Effect of Hot Extrusion on Electrical Tribological Behavior of Ag-Cu/MoS2 Composite under Air and Vacuum Conditions

“…The tribological performances of brush are influenced by many factors, such as the environment, the lubrication type, the content and distribution of the lubrication in composites. The excellent lubrication capability of graphite is observed in air due to the decrease of dangling bonds by the adsorbed vapors (Xiao,et al (6); Rajkumar, et al (7); Xiao, et al (8)). But the poor lubrication of MoS 2 in air could attribute to the oxidation caused by friction heat and oxygen (Efeoglu,et al (9); Zabinski,et al (10)).…”