In this work, an improved plating solution was prepared aiming at improving the utilization rate ofeffective components and reducing the content of hypophosphite in the plating solution to some extent.Considering the variation of complex reductant in the plating solution, the performance of the coatingwas evaluated by various electrochemical measurements, including potentiodynamic polarizationcurves and electrochemical impedance spectroscopy, and surface characterization. It was found that thecoating resulted from proper addition of complex reductant was able to effectively serve as a barrierlayer to block corrosive species from reaching the steel surface.
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