Erosion wear analysis of thermally sprayed WC + TiO2 micron layers on SS-404

SS 404 is one essential material because of its anticorrosion and high heat resistance property. Also, the hardness of SS 404 is less than other available steel. Therefore, to resolve the problem of micro-hardness (improve micro-hardness) of SS 404, coating of WC (80%) with Ti O2 (20%) has been applied. A slurry mixture is prepared to analyze the erosion wear resistance against fly ash, which is examined in a slurry pot tester. The slurry of different particle sizes such as 106–150 µm, 150–212 µm, 212–300 µm, and 300-350µmhas been considered during the experiment. The rotation speed of the pot has been set at 600, 850, 1100, and 1350 rpm with a total time period of 90 min. High-Velocity Oxygen Fuel (HVOF) coating is sprayed on the SS 404 as protection material against erosion. From the experiment, it is observed that coated WC with TiO2 performed well against erosion compared to uncoated SS 404.