Abstract
This paper deals with the fabrication of WC-12wt%Co and Yttria-stabilized Zirconia coatings fabricated using Atmospheric Plasma Spraying technique.The Microstructural Characterization of the coatings was carried out using Scanning electron microscope(SEM).Potentiostat was employed to perform corrosion testing for the bare substrate and the coatings in 5wt %Nacl solution. The adhesion between the coating and the substrate was assessed using Scratch testing machine. The results suggested that WC-12wt%Co coating offered enhanced Corrosion and Scratch resistance when compared to that of the Yttria stabilized Zirconia coatings. This enhancement could be mainly ascribed to the presence of few amounts of interconnected pores and hard tungsten carbide particles embedded in the cobalt matrix.
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