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      Synergistic inhibition behaviour of methylbenzyl quaternary imidazoline derivative and iodide ions on mild steel in H2SO4 solutions

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      Corrosion Science
      Elsevier BV

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          Technical Note:Concerning the Conversion of the Constant Phase Element Parameter Y0into a Capacitance

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            AC and DC study of the temperature effect on mild steel corrosion in acid media in the presence of benzimidazole derivatives

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              Corrosion inhibition and adsorption behavior of methionine on mild steel in sulfuric acid and synergistic effect of iodide ion.

              The corrosion inhibition of mild steel in sulfuric acid by methionine (MTI) was investigated using electrochemical techniques. The effect of KI additives on corrosion inhibition efficiency was also studied. The results reveal that MTI inhibited the corrosion reaction by adsorption onto the metal/solution interface. Inhibition efficiency increased with MTI concentration and synergistically increased in the presence of KI, with an optimum [KI]/[MTI] ratio of 5/5, due to stabilization of adsorbed MTI cations as revealed by AFM surface morphological images. Potentiodynamic polarization data suggest that the compound functioned via a mixed-inhibition mechanism. This observation was further corroborated by the fit of the experimental adsorption data to the Temkin and Langmuir isotherms. The inhibition mechanism has been discussed vis-à-vis the presence of both nitrogen and sulfur atoms in the MTI molecule.
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                Author and article information

                Journal
                Corrosion Science
                Corrosion Science
                Elsevier BV
                0010938X
                April 2009
                April 2009
                : 51
                : 4
                : 850-859
                Article
                10.1016/j.corsci.2009.01.027
                9313fdcc-f802-4665-9b26-556f3cdecc41
                © 2009

                http://www.elsevier.com/tdm/userlicense/1.0/

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