LAUSR

Nitride coatings are generally used to enhance the surface property of the materials in order to perform wear and sliding environments to provide resistance against wear. Titanium Nitride coatings and Aluminium Chromium Nitride coatings were deposited as multilayer over the SS316L surface and the tribological studies were performed at high and room temperatures. The hardness of the multilayer coatings (TiN/AlCrN) provides 1000 VHN which is around five times higher than that of SS316L. The various wear mechanisms have been found from SEM morphology of worn surfaces for the different loading conditions at a high temperature of 400 °C. Chemical reactions led to the different wear mechanisms which were due to the thermal influence of the testing. Oxidation resistance was found for the elevated testing condition and the oxide formations were restricted with the elements of Ti, Cr, Fe, and Al, unlike room temperature testing.