ASSESSMENT OF TRIBOLOGICAL BEHAVIOUR OF ZA-27 ZINC-ALUMINIUM ALLOY BASED NANOCOMPOSITE

Abstract

Mechanical and tribological investigation of obtained nanocomposites is presented in this paper. As matrix material, well known tribological zinc-aluminium alloy, ZA-27 was used. Nanocomposites were obtained by compocasting procedure, while as reinforcement Al2O3 nanoparticles with average size of 20-30 nm was used. Nanocomposites with three different volume fractions were obtained. In order to get insight in structure and mechanical properties of obtained nanocomposites density and hardness measurements were performed. Tribological properties of tested materials were investigated using block-on-disc tribometer in dry sliding conditions with variation three different values of sliding speed and normal load. Wear tracks that were generated as a result of dry sliding process were analysed using optical and scanning electron with EDS microscope.