Cermet coatings were fabricated on AA5083 by D gun coating technique using three different combinations of powder feedstock namely WC-Co, WC-Co-Cr, and Cr 3 C 2 -NiCr. The effect of powder combinations on coatings' phase composition, surface morphology, and crosssectional microstructure were investigated using XRD, SEM, and EDS. Major findings revealed that WC-Co and WC-Co-Cr powders produced higher thickness with considerable surface defects compared to a coating that was produced by Cr 3 C 2 -NiCr powders. Moreover, a smooth compact and a uniform coating was obtained by using Cr 3 C 2 -NiCr powders. Electrochemical corrosion results showed that the OCP values of all the coated samples were shifted to a higher value than substrate and sample coated with Cr 3 C 2 -NiCr powder showed a stable OCP and more positive value than other coated samples. Similarly, the PDP curve of sample coated with Cr 3 C 2 -NiCr also showed lower corrosion current density at the cathodic region and better passivation behaviour in the anodic region.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.