Development, Characterization, and Cavitation Erosion Analysis of High Velocity Oxy-Fuel (HVOF) sprayed TiC and (70Cu-30Ni)-Cr Based Composite Coatings on SS316 Steel

A novel composite coating was developed by depositing powders of Titanium Carbide (TiC) with Cupronickel (70Cu-30Ni) and Chromium (Cr) as binders onto SS316 steel specimens using the High Velocity Oxy Fuel (HVOF) process. The coatings were characterized Energy Dispersive Spectroscopy (EDS) Scanning Electron Microscopy (SEM), their surface hardness, roughness, porosity evaluated. cavitation erosion resistance coated uncoated tested a Stream Water Jet Rig under varying impingement conditions. Coating TiC+50% (70Cu-30Ni)-Cr exhibited better to induced pressure waves than any other proportion coatings, due intermediate hardness damping effect. Further, mixed mode failure observed in TiC+50%(70Cu-30Ni)-Cr coating.