Effect of addition of fly ash and carbon nanotubes in aluminium metal matrix produced by powder metallurgy

Abstract

In this paper, pure aluminium metal matrix composite was fabricated using powder metallurgy, where MWCNT and fly ash used as reinforcing materials. The density and hardness of specimen were calculated and influence of fly ash and MWCNTs on them was discussed. Compression strength of the composites was measured by compression test. It was observed that hardness had increasing effect for certain weight percentage of Fly ash and above that level showed the negative effect on them. The increased ball milling time resulted in well dispersion of the reinforcements. Compressive strength test revealed that addition of MWCNT along with fly ash was resulted in the improvement of the strength of the composite compared to pure Al.In this paper, pure aluminium metal matrix composite was fabricated using powder metallurgy, where MWCNT and fly ash used as reinforcing materials. The density and hardness of specimen were calculated and influence of fly ash and MWCNTs on them was discussed. Compression strength of the composites was measured by compression test. It was observed that hardness had increasing effect for certain weight percentage of Fly ash and above that level showed the negative effect on them. The increased ball milling time resulted in well dispersion of the reinforcements. Compressive strength test revealed that addition of MWCNT along with fly ash was resulted in the improvement of the strength of the composite compared to pure Al.