Experimental Investigation and Time Effect on the Anticorrosion and Microstructural Properties of Zinc Flake Nickel-Phosphorus Coating Electrodeposited on Mild Steel.

In this work, the potential of ZnSO·7HO in NiP sulphate electrolyte deposited on mild steel under constant optimum pH of 5, current density of 1 A/cm, 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.