Synergistic effect on corrosion inhibiton efficiency of ginger affinale extract in controlling corrosion of mild steel in acid medium

Abstract

The corrosion inhibition nature of Ginger affinale extract for the corrosion of mild steel in 0.5N H2SO4 was investigated using weight loss, electrochemical impedance and potentiodynamic polarization methods. The results revealed that Ginger affinale extract acts as a good corrosion inhibitor in 0.5N H2SO4 medium. The inhibition efficiency increased with an increase in inhibitor concentration. The inhibition could be attributed to the adsorption of the inhibitor on the steel surface.