To reduce the friction of artificial joint, a kind of multifunctional surfaces (MS) which can improve bearing capacity, collect debris, provide lubrication and control wettability were designed.
In this study, the MS were prepared by laser surface texturing (LST) and laser peen texturing (LPT). The surface geometric features and wettability of MS were characterized, and the friction performance was tested under the simulated human walking state.
Compared with untextured surfaces and only LPT-treated surfaces, the MS show lower friction coefficient. The main anti-friction mechanisms of MS are the micro-pits that can improve the bearing capacity, collect debris and provide lubrication. Meanwhile, because of the anisotropic wettability on the surfaces, the micro-pits might reduce the viscous force of lubricant and collect the lubricant.
MS were prepared by a combination of LST and LPT and revealed their low-friction performance under simulated human walking condition, which provides a new method for the application of surface texturing technology in tribology.
The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-09-2024-0338/
