Tribological Properties of Ti4AlN3-Reinforced Sn-Ag-Cu Multicomponent Material on Biomimetically Textured 42CrMo Surfaces: Fluid–Solid Coupling Effect and Mechanism Investigation
摘要
To enhance the tribological performance of bearing surfaces, this study investigated the tribological properties of Ti4AlN3-reinforced Sn-Ag-Cu (SAC) composites on a biomimetic fan-shaped ring-textured 42CrMo surface through FSI modeling and multi-frequency tribological testing. Numerical simulations identified optimal texture parameters (width 0.73-0.97 mm) that improve load-carrying capacity and oil film stability. Experimental results indicate that a width of 0.8 mm delivers optimal performance at medium-to-high frequencies. Under FSI-regulated loading, the TicAlN3-reinforced material further enhances friction stability. Ti4AlN3 reinforcement increases the stiffness and shear resistance of SAC, effectively reducing friction fluctuations and wear under high-frequency operating conditions.