Hossein Aghajani - School of Metallurgy and Materials Engineering, Iran University of Science & Technology, Narmak, Tehran, Iran
Mohammad Roostaei - aterials Engineering Department, University of Tabriz, Tabriz, Iran
Shaya Sharif Javaherian - aterials Engineering Department, University of Tabriz, Tabriz, Iran
Arvin Taghizadeh Tabrizi - School of Metallurgy and Materials Engineering, Iran University of Science & Technology, Narmak, Tehran, Iran
Ali Abdoli Silabi - Iran Small Industries and Industrial Parks Organization (ISIPO), Tehran, Iran
Navid Farzam Mehr - Institut fur Metallurgie, TU Clausthal, Clausthal-Zellerfeld, Germany

In this paper, the copper-based nanocomposites with TiO۲ nanoparticles were synthesized by the self-propagating high-temperature synthesis (SHS) process. The effect of the different amounts of excess copper, in comparison with the stoichiometric ratio (CuO:Ti ratios of ۱:۱, ۲:۱, and ۳:۱), on the phase formation of achieved samples was studied. A thermodynamical study showed that increasing the excess copper powder reduces the adiabatic temperature, which helps the phase formation. The maximum Brinell hardness (۸۹) was obtained for the sample with the CuO:Ti ratio of ۱:۱. Finally, the wear behavior of the synthesized nanocomposites was evaluated by the pin on disk test, and the variation of friction coefficient and lost weight were measured. The friction coefficient decreased by the formation of phases and distribution of titanium oxide particles during the SHS process in the presence of the stoichiometric ratio of CuO:Ti. Therefore, the wear behavior was improved. The lowest depth of wear trace was measured ۰.۶۸ where the ratio of CuO: Ti was ۱:۱.© ۲۰۲۱ The Authors. Published by Synsint Research Group.

Wear behavior, Synthesis, Thermodynamic, Cu-TiO۲