Tribological behavior of plasma sprayed Cr2O3-3%TiO2 coatings

► Tribological behaviors of plasma-sprayed conventional and nanostructured ceramic coatings using pin on disc type dry sliding and pot type slurry erosion test were investigated in the present work. ► The experimental results indicated that there were two main wear mechanisms, plastic smearing and adhesive tearing, in the worn coatings under dry sliding. ► The main mass removal mechanisms observed in all the coatings subjected to slurry erosion were the formation and propagation of brittle cracks resulting in the detachment of coating surface material.