The Increase in the Wear Resistance of Copper Substrate Coated by Cu-Al2O3 Nanocomposite Through Solution Combustion Method

Solution Combustion is a new and low costs method in order to synthesis nanomaterials. In the presented investigation, Copper and Aluminum nitrates, Urea and Graphite are used as oxidizer, fuel and auxiliary materials, respectively. All experiments categorized in five groups in terms of percentage of alumina (5, 15, 25, 35 and 45 wt. %) and fuel to oxidizer ratio of 1.25. Time- Temperature diagrams are plotted during reaction and wear tests carried out for all samples. Results showed, sample with 25 wt. % alumina can increase the wear resistance 4 times than non-coated copper substrate. Also, the coating microstructure were investigated by SEM equipped by EDS, TEM and XRD. The results proved synthesis of nanocomposite copper-alumina coating just in one-step.