ABSTRACT
Tribology is the science of interacting surfaces in relative motion, and it includes studies on friction, wear and lubrication. Friction occurs when there is relative motion between two contacting solid surfaces and is important in moving machine assemblies. Some applications require low friction to save energy, whereas, in some cases such as brakes etc., high friction is desirable to oppose the motion. Many researches studies have shown that the tribological characteristics are influenced by many factors and its play a very important role in tribology. . By studying the tribological behaviour of materials, an appropriate choice of material pairs can be made to save energy, conserve materials and reduce weight and cost of machines. This work mainly focuses on tribological properties of some specific coatings of TiAlN, TiSiN, CrN sliding against high-strength boron steel at low and elevated temperatures. Tribological properties of these coatings have been tested using an Optimol Schwingung, Reibung, und Verschleiss (SRV) machine during sliding. Tribological surfaces were analysed using a Wyko 1100 NT optical surface profiler and SEM/EDS.
