Synthesis and Analysis of Aluminium 6063, Graphite and CNT (Hybrid) Nano Composites by using Powder Metallurgy

Abstract

The aluminum-graphite and carbon nano tubes hybrid composites have been successfully fabricated by powder metallurgy and hot extrusion techniques. The hybrid nano Composite displayed uniform dispersion of gr-cnt and an excellent interfacial bonding with the aluminum matrix micro structural characterization revealed that composite displayed uniform dispersion of gr-cnt and excellent interfacial bonging with aluminum bonding. Hardness testing showed that there occurs a significant increment in hardness value of fabricated composites. The strengthening of aluminum matrix by gr-cnt is mainly due to grain refinement and effective load transfer. Our results indicate that gr-cnt increases the tensile strength ofthe aluminum by up to12%. High resolution SEM microscopy revealed that the defective nature of gr-cnt produced by thermal exfoliation/reduction of graphite oxide is likely responsible for promoting aluminum carbide formation. Despite of the presence of defects in gr-cnt particles. The hardness testing showed that enhanced interfacial binding and load transfer of aluminum matrix composites are superior compared to that of polymer matrix composite.

Effect of Microstructure and Mechanical Properties of CNT/Graphene Reinforced Al- Hybrid MMCs

“…Ishtiaq Ahmed et al [8] studied on analysis of Aluminium 6063, CNT and Graphite (Hybrid) Nano Composites by using powder metallurgy. The results revealed that there is significant increase in hardness value of the fabricated composites.…”