Tribological properties of Al-Si alloy A356 reinforced with Al2O3 particles

Abstract

MMCs as new and promising materials are under constant development and their application in different industries is increasing. They have better mechanical and tribological properties comparing to the matrix materials. This paper presents tribological tests results of Al-Si alloy A356 (EN-Al Si7Mg0.3), with and without 3 wt. % Al2O3 reinforcement. The reinforcement was in the shape of particles with 12 μm in diameter and the technology for producing of composite was compo casting. The pin-on disc tribometer was used to carry out these tests under dry sliding conditions at different loads. Worn surfaces and wear debris were also observed and analyzed with scanning electron microscopy (SEM). .