Corrosion inhibition of mild steel by ethylamino imidazoline derivative in CO2-saturated solution

Okafor, P.C.; Liu, X.; Zheng, Y.G.

doi:10.1016/j.corsci.2009.01.017

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Corrosion inhibition of mild steel by ethylamino imidazoline derivative in CO2-saturated solution

Author(s): P.C. Okafor , X. Liu , Y.G. Zheng

Publication date Created: April 2009

Publication date (Print): April 2009

Journal: Corrosion Science

Publisher: Elsevier BV

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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

A. Popova, E Sokolova, S Raĭcheva … (2003)

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Key issues related to modelling of internal corrosion of oil and gas pipelines – A review

Srdjan Nešić (2007)

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

E. Oguzie, Y. Li, F Wang (2007)

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.