Erosion wear characterisation of DLC and AlCrN-based coated AISI-304/316 steels

Abstract

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%.

Microstructural, mechanical, oxidation resistance and tribological properties of TaMgN films

“…In recent research, the incorporation of a third element into the binary nitride film is one of the effective ways to improve the properties of films. For example, Al and Si have been added into nitride films to improve the tribological properties and thermal stability of the films [6][7][8]. For binary TaN films, high friction coefficient and corrosion resistance are the main factors affecting their practical application.…”

Tribological CCF-PEEK transfer film growth on cutting tool coating

“…Diamond-like carbon (DLC) [11], titanium nitride (TiN) [12], titanium aluminium nitride (TiAlN) [13] and diamond [14] are frequently used to strengthen wear resistance of CFRP cutting tools [15-17]. Köpf et al [18] found that hard carbon fibres caused abrasive wear whereas the relatively soft polymer matrix showed high adhesion tendency to cutting tool coatings.…”

The effect of duty cycle on the mechanical and electrochemical corrosion properties of multilayer CrN/CrAlN coatings produced by cathodic arc evaporation

“…Wear resistance coatings are used to protect and increase the lifetime of cutting tools, metal forming dies, turbine blades and component surfaces against abrasive wear such as friction and erosion [1][2][3][4][5]. Because of their mechanical properties, excellent tribological and corrosion resistance in harsh environments, transition metal nitrides, carbides and borides, such as TiN, CrN, TiC, TiB 2 , deposited PVD and CVD processes, are widely used as protective coatings [6][7][8][9]. As reported by researchers, CrN compounds are known to be better than TiN in mechanical, tribological, oxidation and corrosion behaviours [8,9].…”

“…Because of their mechanical properties, excellent tribological and corrosion resistance in harsh environments, transition metal nitrides, carbides and borides, such as TiN, CrN, TiC, TiB 2 , deposited PVD and CVD processes, are widely used as protective coatings [6][7][8][9]. As reported by researchers, CrN compounds are known to be better than TiN in mechanical, tribological, oxidation and corrosion behaviours [8,9]. The use of ternary metal nitrides and multilayer systems such as CrAlN, TiAlN, Ti/TiN, TiAlSiN, TiAlSiN/CrN, and AlCrN/TiAlSiN has developed on a particularly large scale in the recent years, due to their excellent tribological performance, proper mechanical properties, good stability at high temperature, and suitable high-temperature oxidation and corrosion resistance, in comparison with the aluminium-free coatings such as TiN and CrN [10][11][12].…”