Mechanical and tribological behavior of nanostructured copper-alumina cermets obtained by Pulsed Electric Current Sintering

► The nanostructure of Cu-Al2O3 powders is retained after PECS processing. ► Microstructural basis for the strengthening mechanisms is provided. ► Coefficient of friction is equal for coarse grained Cu and nanostructured Cu-Al2O3. ► Wear depth of Cu-Al2O3 is lesser than half that of Cu due to stable microstructure. ► Mild oxidative wear and delamination wear are the main operative mechanisms.