Exploration of in-house synthesized and functionalized graphene as reinforcement in Cu-matrix for improved mechanical and anti-corrosion properties

Abstract The current investigation reports the synthesis of Cu-graphene nano-composite thin films through electroplating onto titanium substrates by using various concentrations of functionalized few layered graphene nano-sheets (FLGNs). Thereafter the properties of the films were analyzed and compared, specifically the mechanical and corrosion behavior. FLGNs used in the study were synthesized by employing electrochemical exfoliation method in three different electrolytic mediums. The effect of intercalating ions on structure, surface morphology, particle size and functionalization of FLGNs was studied through various characterization techniques. The mechanical performance of the composite films was found to be enhanced evidently by graphene addition. However, the strengthening effect first enhanced and then deteriorated with increasing graphene content. Similarly, for the corrosion rate, the values got altered in accord with the solution type and concentration of the reinforcement. At first, it started decreasing and then increased after a certain content of graphene in the matrix of the composite.