Microstructure characterization of (CrC)+(Mo+Fe)+NiCrAlloy Coating by Atmospheric Plasma Spraying on Piston Ring with Liner Contact

Abstract

The current study deals with the tribological property of piston rings of cast iron coated with
(CrC)+(Mo+Fe)+NiCr alloy with plasma spray coatings.To improve the tribological characerstics of the engine, the
thermally sprayed technique are being used for depositing the coating on various parts. To provide a reliable basis for the
practical application in automotive industry, a composite powder containing 60% high carbon molybdenum, 20% pure
molybdenum, 10% CrC and 10% NiCr deposited on the cast iron substrate by atmospheric plasma sprayedand was
characterized by SEM. It was found that coating has structure uniformly dense, laminar structure with an exceptional
coating adhesion with the substrate.