Abstract
Pure zinc coatings have been widely reported for surface modification on metallic materials for industrial applications. However their major setbacks are their average anticorrosive properties and instability at high-temperature applications. In this study, an attempt was made to incorporate MoO2 into sulphate bath to produce a ternary Zn-Ni-MoO2 coating at varied voltage. The microstructural characteristics of these produced series composite coatings were investigated using scanning electron microscope coupled with energy dispersive spectroscopy (SEM-EDS). The corrosion degradation properties in 3.5% NaCl medium were studied using potentiodynamic polarization technique and characterized with Optical Microscope. The average micro-hardness and thermal properties were determined with diamond based Vickers hardness tester and isothermal furnace at 350 ˚C respectively. The study revealed that the obtained coating provided enhanced thermal stability characteristics, improved morphology and corrosion resistance.
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