Wear is one of the destructive mechanisms which can deteriorate performance of many industrial systems and limit the life of structures. Due to the high surface to volume ratio and effect of parameters such as grain size, grain boundary, dislocation density and porosity on mechanical properties of nanostructured materials, the study of wear in nano materials is more important than other conventional materials. Titanium Nitride (TiN) coatings are thin protective surface coatings used to reduce friction and minimize wear in a wide range of applications. TiN intermetallic is being recognized as a high temperature structural material because of its excellent oxidation resistance, high thermal conductivity, resistant surface, even coloring of the entire surface, UV-resistant and corrosion character, low density and high melting point. These properties have made TiN a suitable material for coating different industrial components to improve their wearing, corrosion and oxidation resistance. A number of attempts have been made to overcome this draw back. In this work, nanocrystalline TiN powder was deposited on low carbon steel substrates by using physical vapor deposition (PVD) technique. Nanoindentation test was then carried out to obtain the mechanical properties of the coating. Next, the wear tests were performed with a pin on disk machine without lubrication under different load and speed conditions. Archard equation was used to determine the wear of the material. FE model was used to simulate the pin on disk experiments to obtain stresses and temperature of the surface, which seems to be in good agreement with the experimental data. A model was also developed to study the generated entropy of the tribosystem. It was shown that there is a linear relation between wear and the generated entropy. Keywords: Wear, Nanostructured TiN coating, Pin on disk test, Wear simulation, entropy and wear
