Surface composition–lubrication design of Al2O3/Ni laminated composites – Part II: Tribological behavior of LaF3-doped MoS2 composite coating in a water environment

Abstract

Composition–lubrication structure with micro-textures and LaF3-doped MoS2 composite coating is prepared on the surface of Al2O3/Ni laminated composites by laser texturing and spraying. It is found that the synergy effect of micro-texture, composite coating and boundary film of water improves the tribological properties of the materials. The solid lubricants embedded in the micro-dimples can provide a second lubricating effect, thus realizing a low-friction coefficient (0.15) for a long time. The wear life of textured composite coating can be increased to approximately 105 cycles, which is 2.0 times higher than that of the untextured coating.