Synergistic effect of Fe-amorphous and bionic microtexture in enhancing high-temperature tribological properties of Al-12Si piston materials

Abstract

This study designs new Fe-amorphous/Al-12Si piston composite materials. Study the effect and synergistic mechanism of the addition of Fe-amorphous and bionic micro-textured laser surface on the high-temperature friction performance of Al-12Si piston material under mixed lubrication conditions of B30 biodiesel and engine lubricating oil. The results indicate that the frictional properties of the untextured surface of the Fe-amorphous/Al-12Si composite material depend primarily on the amount of Fe-amorphous added. The 10 wt% Fe-amorphous/Al-12Si composite exhibits a dense, void-free microstructure with optimum anti-friction and anti-wear performance. It is noteworthy that the interaction between the "anchoring" effect caused by the Fe-amorphous addition and the synergistic effect of the bionic microtexture providing a stable lubricating environment further enhances the high-temperature friction properties of Al-12Si.