An attempt has been made to study the effects of hot corrosion studies on Inconel-625 substrates with Nickel Chromium, Aluminum Oxide, and Tungsten Carbide coatings using plasma arc spray technique. Hot corrosion studies were conducted on an uncoated Inconel-625 as well as coated samples in molten salt environment (Na2SO4 -60%V2O5) at 900°C to simulate aggressive conditions encountered in industrial applications. The samples were also subjected to air oxidation through a series of repetitive heating and cooling stages. The corrosion rates were determined from the experiments and compared to judge the suitability of the coatings. Techniques like X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Analysis (EDAX) were used to characterize the corrosion products.