Eco-friendly corrosion inhibitors: Synergistic effect of ethanol extracts of calotropis for corrosion of mild steel in acid media using mass loss and thermometric technique at different temperatures

Abstract

The inhibitive action of leaves (LV), Latex (LX) and Fruit (FT) extracts of Calotrpis procera and Calotropis gigantea on mild steel corrosion in HCl, H₂SO₄ and mixture of solutions have been studied using mass loss and thermometric technique at different temperatures. The results indicate that the ethanolic extracts functioned as a good corrosion inhibitor in both environments and inhibition efficiency increased with extracts concentration. A mechanism of chemical adsorption of the plants components on the surface of the metal is proposed for the inhibition behavior. The inhibition efficiency increases up to 86.37%.