Mechanical and Microstructural Characterization of Copper and Carbon Nanotubes Composites

Abstract

In recent years, copper matrix with carbon nanotubes (CNTS) reinforcement has attracted increasing attention. The distribution of reinforcement in composites is a crucial factor, determines the homogeneity and mechanical properties. By using the powder metallurgy technique various amounts of well dispersed multi-walled carbon nanotubes (MWCNTS) were used to reinforce a copper material. The microstructures of nanocomposites were observed in the optical metallurgical microscope. Wear characterization of the nanocomposites was performed on the pin-on-disk wear testing machine under the different loading conditions. In comparison with copper, addition of MWCNTs decreases the coefficient of friction in cu MWCNT nanocomposites. The results shown in addition to MWCNTs can upgrade the copper and convert it has a wear resistant material. The MWCNT is directly improving the tribological performance and indirectly influencing the microstructure and mechanical properties of nanocomposites by acting as a lubricating medium.