Study on factors affecting tribological properties of Nano-SiO₂reinforced polyamide

Abstract：The effect of counterface roughness on tribological properties of 10%nano-SiO2 reinforced polyamide composite was studied under dry friction on MM-200 wear tester.Scanning electronic microscope (SEM) and optical microscope was used to study wearing mechanism and transfer film of nano-SiO2 filled polyamide composite.The results indicate that with the increase of counterface roughness, the friction coefficient and wear mass of nano-SiO2 reinforced polyamide composite decrease first, and then reach to the lowest value, ultimately increase.It shows that there is an optimum counterface roughness to make the wear of composite lowest.In this test, the optimμm counterface roughness is 0.22μm.

Keyword：nanometer;composite;wear mechanism;tribology;counterface roughness;