Influence on transitional rare earth metal composite on the ternary based sulphate rich coatings.
Monyai, T. Fayomi, O.S.I. Popoola, A.P.I.
Monyai, T.
Fayomi, O.S.I.
Popoola, A.P.I.
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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.
Description
International Conference on sustainable materials processing and manufacturing, SMPM 2017, 23-25 January 2017, Kruger National Park.
Date
2017-01-23
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Publisher
Elsevier
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Keywords
Thermo-mechanical properties, structural modification, Corrosion