Residual, Corrosion & Tribological Behavior of HVOF Sprayed Sustainable Temperature-Dependent Carbon-Based Hybrid Composite Coating

At present, cost-effective coatings that cause less pollution are in great demand; to decrease frictional losses, carbon-based hybrid composite have been developed using a high-velocity oxy-fuel (HVOF) spray process. The microstructural, tribological, corrosion, and mechanical properties of these evaluated high-resolution X-ray diffraction (HRXRD), field emission scanning electron microscopy-Energy dispersive Spectroscopy (FESEM-EDS), Raman spectrum, Vickers micro-hardness tester, µ-360 cos(α) residual stress analyser, corrosion high temperature tribometer. stress, tribological behaviour at temperatures were investigated pin-on-disc high-temperature performance was tribometer, the experimental result shows coefficient friction (COF) varies from 0.12 0.52, while wear results range 45 µm 120 µm, as test condition ranging 50 °C 350 °C, load 60 N 90 sliding velocity 0.1 m/s 0.4 respectively. testing show mass loss decreases 0.10 g 0.04 g, when samples dipped for 1 h; 8 h, coating varied 0.045 g. showed 78.9 % increase micro-hardness, 78 62.5 due h respectively, 76.9 COF reduction ºC temperature, load.