Behera, N.Ramesh, M.R.2026-02-032025Tribology - Materials, Surfaces and Interfaces, 2025, , , pp. -17515831https://doi.org/10.1177/17515831251398253https://idr.nitk.ac.in/handle/123456789/20574Titanium alloys are used in the automotive and aerospace industries, but perform poorly at high temperatures due to inadequate wear and friction properties. This study investigates Cr<inf>3</inf>C<inf>2</inf>-25%CoNiCrAlY and WC-CoCr coatings applied via High-velocity oxygen Fuel on a titanium-31 substrate. Coatings were evaluated from 200–800?°C under 20?N and 30?N using a ball-on-disc tribometer. Characterization techniques included scanning electron microscope, X-ray diffraction, microhardness, porosity, and bond strength. WC-CoCr coating showed higher hardness and bond strength than Cr<inf>3</inf>C<inf>2</inf>-25%CoNiCrAlY. Both coatings exhibited reduced wear rates until 600?°C, after which the wear rates increased at 800?°C due to enhanced oxidation. The coefficient of Friction decreased with increasing temperature. At 600?°C, oxide phases helped reduce wear and friction. WC-CoCr coating shows better wear resistance than Cr<inf>3</inf>C<inf>2</inf>-25%CoNiCrAlY coating and the substrate. Wear mechanisms changed from abrasive and fatigue at 200?°C to oxidative and adhesive at 800?°C. Volumetric ball loss was higher for WC-CoCr due to its greater hardness. © The Author(s) 2025Aluminum alloysBinary alloysBond strength (materials)CarbidesChromium alloysChromium compoundsCobalt alloysComposite coatingsFrictionHardnessOxygenTernary alloysThermal fatigueTitanium alloysTitanium oxidesTribology3d profilometerCarbide coatingComposites coatingCoNiCrAlYHigh velocity oxygen fuelsOxide layerProfilometersWC-CoCr coatingWear and frictionWear-rateWear resistance