Abstract
The corrosion inhibition of mild steel in 0.5 M H2SO4 medium by methanol extract of Mitracarpus Hirtus leaves was studied using weight loss, colorimetric and electrochemical studies. Results indicate that the inhibitor is effective in H2SO4 medium and the efficiency decreases with increase in temperature and concentration of the acid. The adsorption of the inhibitor through charge transfer mechanism was confirmed by impedance studies and the mixed type nature of the inhibitor was inferred from the Tafel plots. The adsorption of the inhibitor onto the mild steel surface follows Frenulidch isotherm. FESEM, EDS and FT-IR analyses confirmed the protective layer formed on the mild steel surface.
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Ragul, R., Ravichandran, J. & Murugesh, A. Adsorption and Inhibitive Action of Mitracarpus Hirtus Extract Towards the Corrosion of Mild Steel in H2SO4 Medium. J Bio Tribo Corros 6, 65 (2020). https://doi.org/10.1007/s40735-020-00360-z
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DOI: https://doi.org/10.1007/s40735-020-00360-z