Hybrid Reinforced Aluminium Composites Using Reduced Graphene Oxide Fabricated via Powder Metallurgy Technique

Abstract

Recently, carbonaceous materials, such as graphene, have proven to be promising additives that show considerable improvements in mechanical and tribological properties of aluminium-based composites. In this present investigation, novel aluminium based hybrid composite specimens of various RGO and Al2O3 contents are prepared using powder metallurgy technique. The composite specimens have been tested in wear and microhardness. The results show that the hybrid composite containing 0.3 wt.% RGO-5 wt.% Al2O3 experiences the highest wear resistance with a hardness of about 76 HV among the tested composite specimens. The improvement in properties in the optimized hybrid composite was found to be much higher when compared to hybrid Aluminium Composites in literature fabricated using other techniques.