This study has been made, in the context of a live problem at GNDTPP, Bathinda, Punjab, to evaluate to erosion wear behaviour of diamond-like carbon (DLC) and AlCrN-based coated AISI-304 & AISI-316 boiler steels. Most of the power is generated through the thermal power produced through using coal which produces a lot of ash which is the primary reason behind solid particle erosion (SPE) of the components. The objective of this work is to improve surface properties so as to counter SPE specifically in boiler components. DLC, AlCrN-based monolayer and AlCrN-based multilayer coatings were deposited using PVD technique on the stainless steels substrates. The substrates were tested at an angle of 90 and 30° with air velocity taken as 35 m s–1, air temperature as 800°. X-ray diffraction and SEM/EDAX technique were used for analysing different samples. AlCrN-based multilayer coating can reduce the weight loss from 30 to 80%.
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