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Inhibitive action of Bridelia retusa leaves extract on corrosion of mild steel in acidic media Patel, Niketan Rawat, Anamika Jauhari, Smita Mehta, Girish Bridelia retusa Acid corrosion inhibitor Electrochemical polarization Electrochemical impedance spectroscopy Scanning electron microscopy Mild steel Extract of Bridelia retusa leaves was investigated as corrosion inhibitor of mild steel in 1 N H2SO4 using conventional weight loss, electrochemical polarizations, electrochemical impedance spectroscopy and scanning electron microscopic studies. The weight loss results showed that the extract of Bridelia retusa leaves is excellent corrosion inhibitor and electrochemical polarizations data revealed the mixed mode of inhibition. While the results of electrochemical impedance spectroscopy have shown that the change in the impedance parameters, charge transfer resistance and double layer capacitance, with the change in concentration of the extract is due to the adsorption of active molecules leading to the formation of a protective layer on the surface of mild steel. Scanning electron microscopic studies provided the confirmatory evidence of improved surface condition, due to the adsorption, for the corrosion protection. Atlanta Publishing House LLC 2010-06-15 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://www.eurjchem.com/index.php/eurjchem/article/view/52 10.5155/eurjchem.1.2.129-133.52 European Journal of Chemistry; Vol. 1 No. 2 (2010): June 2010; 129-133 2153-2257 2153-2249 eng https://www.eurjchem.com/index.php/eurjchem/article/view/52/PDF