Analysis of erosive wear of MWCNTs/MnO2 nanocomposite

Abstract

This paper presents the erosive wear of MWCNTs/MnO2 nanocomposite. The nanocomposites with 5, 10 and 15 wt% of MWCNTs were fabricated using cost effective powder metallurgy technique. The mass density analysis shows that the green and sintered mass density of the nanocomposites increases with addition of MWCNTs from 5wt% to 10wt% and then decreases from 10wt% to 15wt%. The decrease in density from 10wt% to 15wt% may be due to agglomeration of MWCNTs in the nanocomposites. The erosive wear test was done by self designed erosive wear tester. The erosive wear test indicates that 10 wt% MWCNTs/MnO2 nanocomposite exhibits higher erosive wear resistance as compared to 5 and 15 wt% MWCNTs/MnO2 nanocomposite. The field emission scanning electrone microscope (FESEM) surface morphology of fractured surface shows that the nanocomposites were brittle fractured during erosion process. The erosive wear of the nanocomposite depends highly on its mass density, hardness and dispersion of multiwalled carbon nanotube in H2SO4(aq) solution.