Tribological Performance and Model Establishment of Self-Compensating Lubrication Film Inspired by the Functional Surfaces of Scapharca subcrenata Shells

Composite surface structures inspired by the functional of Scapharca subcrenata shells can improve tribological properties effectively, composed ordered “U”- shape micro-grooves and solid lubricant Sn-3.0Ag-0.5Cu (SAC305) alloys. A series wear tests were conducted to further investigate formation characteristics self-compensating lubrication film, then mathematical model spreading tribofilm could be proposed. The results showed that appropriate texturing parameters (NBCSS-28) had a great effect on which exhibited lower friction coefficient (0.386) volume (0.682 mm3) than other NBCSS samples. tribofilm, with thickness few microns, was deposited contact after tests. interfacial reactants (the Ni/Ni3Sn2 interface) SAC305 alloys, Ni3Al alloys confirmed wetting experiments thermogravimetric analysis, promote deposition diffusion during sliding process. Hence, distinguishable layered observed fractured surfaces Moreover, process an obvious relationship reduction in dynamic coefficient. proposed accumulation behaviors randomly form multiple discrete irregular film shapes worn surface, predict optimization design parameters.