Abstract:To improve the friction reduction and wear resistance of tungsten steel components,a tungsten steel sample with a groove width of about 0.6 mm was designed based on the surface structure of fish scales and combined with finite element simulation and biomimetic design.The Sn-Al2O3 composite solid lubricant with the best ratio was prepared,and was filled into the bionic fish scale surface texture(STS) by high-temperature infiltration to obtain the tungsten steel texture samples filled with Sn-Al2O3 composite solid lubricant.The tribological properties of the samples under different load-sliding frequency was studied.The results show that compared to the operating conditions of 30 N-2 Hz,25 N-3 Hz,15 N-5 Hz,and 10 N-6 Hz,under the condition of 20 N-4 Hz,the sample has the lowest average friction coefficient and wear rate.This is because under relatively low loads and relatively high sliding frequencies,the cyclic stress and frictional heat make it easier for solid lubricants in the plastic deformation state to be extruded from the texture and migrated to the friction surface,forming a complete lubrication film,which can effectively improve the material’s friction reduction and wear resistance performance of the samples.