Abstract
The corrosion and electrochemical behavior of carbon steels in standard 0.5% chloride electrolytes acidified with CH3COOH and saturated with H2S was studied. The possibility of protecting steels with quaternary ammonium salts (QASs) obtained by reactions of secondary and tertiary amines with benzyl chloride was investigated. It was found that the protective properties of QASs depend on their chemical structures and can be expressed, to a first approximation, in terms of the Linear Gibbs Energy Relation with the use of the hydrophobic f constants and Taft σ*-constants of the substituents. The presence of hydrophobic and electron-accepting substituents was found to enhance the protective properties of the inhibitors.
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Original Russian Text © Yu.I. Kuznetsov, L.V. Frolova, E.V. Tomina, 2006, published in Zashchita Metallov, 2006, Vol. 42, No. 3, pp. 233–238.
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Kuznetsov, Y.I., Frolova, L.V. & Tomina, E.V. On inhibition of hydrogen-sulfide corrosion of steels with quaternary ammonium salts. Prot Met 42, 215–220 (2006). https://doi.org/10.1134/S0033173206030027
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DOI: https://doi.org/10.1134/S0033173206030027