COMPARISON OF TRIBOLOGICAL BEHAVIOR OF Cr3C2/NiCr COATINGS DEPOSITED BY DIFFERENT THERMAL SPRAY TECHNIQUES: A REVIEW
V. N. Shukla; V. K. Tewari; R. Jayaganthan
National Conference on Advancements and Futuristic Trends in Mechanical and Materials Engineering (AFTMME 2011)
abstract:Thermal spraying techniques are the foremost deposition methods for fabricating coatings with excellent wear and corrosion resistance reported in the published literature. The unique processing variables in thermal spraying inevitably leads to superior mechanical properties like bonding strength, Young’s modulus, higher erosion and wear resistance etc. among the other deposition techniques. Different composition of Cr3C2/NiCr coatings are widely used in gas turbine, steam turbine, aero- engine and power generation systems to improve the resistance to sliding, abrasive and erosive wear. A lot of literature on cermets coatings deposited by plasma spray, high velocity oxy fuel (HVOF) and detonation gun spray processes is available. In recent years, tremendous efforts have been made for fabricating coatings with different compositions as well as on the various kinds of super alloy substrates. In this review paper critical analysis of the available literature and comparison of different tribological properties of Cr3C2/NiCr coatings deposited by various thermal spray techniques are made.
keywords:Thermal spray process, erosion, wear, Cr3C2-NiCr coatings;plasma spraying
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