Corrosion behavior of mild steel in the presence of scale inhibitor in sulfuric acid solution |
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Authors: | Yavuz Sürme A Ali Gürten Emel Bayol |
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Affiliation: | 1.Faculty of Arts and Sciences, Department of Chemistry,Nigde University,Nigde,Turkey;2.Faculty of Arts and Sciences, Department of Chemistry,Osmaniye Korkut Ata University,Osmaniye,Turkey |
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Abstract: | Surfactants such as non-ionic polyethylene glycol tert-octylphenyl ether (Triton X-114) have been studied as efficient corrosion
inhibitors in acid medium. In this study inhibition performance of Triton X-114 has been evaluated as corrosion inhibitor
for mild steel in 0.5 mol l−1 H2SO4. The electrochemical impedance spectroscopy (EIS), potentiodynamic polarization and linear polarization (LPR) techniques
has been applied to determine the electrochemical behaviour of Triton X-114. The maximum efficiency of Triton X-114 was found
as 96% at the concentration 5.0 × 10−5 mol l−1. The adsorption isotherm of inhibitor on the mild steel surface was found to be in a good agreement with the Langmuir and
the standard free energy value (ΔG
ads°) was calculated as −50.1 kJ mol−1, which shows that adsorption of Triton X-114 on the mild steel surface improves the inhibition characteristics in 0.5 M H2SO4. |
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Keywords: | |
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