Experimental Investigation and Time Effect on the Anticorrosion and Microstructural Properties of Zinc Flake Nickel−Phosphorus Coating Electrodeposited on Mild Steel
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Date
2021-04-21
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Publisher
ACS Publications
Abstract
In this work, the potential of ZnSO4·7H2O in NiP sulphate electrolyte deposited
on mild steel under constant optimum pH of 5, current density of 1 A/cm2, stirring rate of 200
rpm, and varying time parameter between 10, 15, 20, and 25 min were studied using the
electrodeposition method. The microstructure properties and corrosion resistance characteristics
were analyzed using a scanning electron microscope enhanced with an energy-dispersive
spectroscope and potentiodynamic polarization apparatus, respectively. The codeposited was
subjected to different media test rig of 0.5 M H2SO4 and 3.5% NaCl to examine the
susceptibility effect. The results pointed out that there is a stable mass weight gain as the time
increases, which facilitates the formation of dispersed crystal build-up and homogeneous NiPZn
content within the interface. A remarkable corrosion property was also noticed with deposits of
highest time effect, which is invariably a factor of solid bonding seen at the surface lattice.
Description
Staff Publication