TRIBOLOGICAL BEHAVIOUR OF A356/10SiC/3Gr HYBRID COMPOSITE IN DRY-SLIDING CONDITIONS

Abstract

The paper presents tribological behaviour of hybrid aluminium composite A356/10SiC/3Gr in dry-sliding conditions. Hybrid composites were made with a modified compocasting procedure and tribological tests were conducted on a tribometer with a block-on-disc contact geometry. An analysis of the effects of three sliding speeds (0.25, 0.5 and 1) m/s) and two normal loads (10 N and 20 N) on the wear volume and wear rate was conducted for different sliding distances. The total sliding distance was 300 m. SEM and an EDS analysis of the wear surfaces of the tested material were also performed. The analysis of the wear surfaces shows an intensive adhesive wear of hybrid composites. Also, the appearance of mechanically mixed layers (MMLs) was confirmed, i.e., an increase in the concentration of iron in the hybrid composite material.