Wear and Friction Study of the Coated Piston Rings Material
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Present work discusses the role of metal coatings on the piston rings material for the enhancement of its wear and friction properties. Coatings of zinc (Zn) and zinc and chromium (Cr) have been developed on the piston rings material using the electroplating technique. Wear and friction properties were evaluated using a linear reciprocating tribometer (LRT) in unlubricated condition. It is observed that zinc and zinc + chromium both the coatings have improved the wear resistance of the piston rings material; however, the improvement by Zinc alone was not that much significant. There was an improvement of 11% by zinc coating and 59% by zinc and chromium coating in the wear resistance. The coefficient of friction between the piston rings material and cylinder linear reduced up to 17% with the zinc and chromium coating. A finite element model has also been modeled for the prediction of maximum stress and strain area on the pin and plate surface for all the considered experimental runs.
KeywordsCoating Cylinder linear Friction Piston rings Wear
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