The present work aims at the development of an energy efficient and eco-friendly approach for the deposition of TiCrN composite coating. The study describes the deposition, characterisation and corrosion resistance of the composite coating. The methods of evaluation include assessment of colour and uniformity by physical and visual observations, adhesion by pull-off adhesion test, morphological features by optical and scanning electron microscopy, and chemical composition by energy-dispersive X-ray analysis. The corrosion resistance of the coatings in 3.5 % NaCl was evaluated by potentiodynamic polarisation studies. The finding of this study reveals that the adhesion of the coating on uncoated steel and adhesion of paint film on TiCrN composite-coated steel were found to be good. A potentiodynamic polarisation result confirms that TiCrN composite coating offers a better corrosion resistance than uncoated steel.

Purpose In this study the microstructure and wear characteristics of Multilayer AlCrN coated AISI 410 stainless steel with the physical vapor deposition technique. Design/methodology/approach The friction and wear performance of the ML-AlCrN-coated AISI410 steel and uncoated AISI410 steel sliding against with high carbon steel were investigated by the ball cratering test at room temperature. The tribological characteristic of coated AISI410 steel was determined by applying constant sliding velocity of 0.3927 ms−1 and total sliding distance of 353.43 m over various normal loads of 2, 3 and 4 N. Findings The AlCrN-coated AISI410 steel showed excellent wear performance up to 4 N load. The uncoated AISI410 steel showed good to acceptable wear resistance up to 2 N load. The wear tracks and worn surface were examined by scanning electron microscopy with energy-dispersive X-ray spectroscopy (EDS) attachment for explaining the differences in wear mechanism. Originality/value The ability of coating to delay substrate oxidation, with an excellent wear resistance, was identified under different parameters on worn areas.

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