Abstract
Corrosion inhibition effect of cationic surfactants, DTAB (Dodecyl Three methyl Ammonium Bromide) and TTAB (Tetradecyl Three methyl Ammonium Bromide) on low carbon steel was studied using weight loss, Open circuit potentional (OCP) and Electrochemical Impedance Spectroscopy (EIS) measurements. The effect of chain length compatibility on corrosion inhabitancy of surfactant and co-surfactant was investigated by C7OH (1-heptanol), C12OH (1-dodecanol) and C15OH (1-pentadecanol) as nonionic co-surfactants in acidic media at different concentrations of DTAB and TTAB. Data represented that the corrosion rate decreased by increasing concentration of DTAB and TTAB, independently. The effect of chain length compatibility on surfactant behavior was discussed. Decreasing of corrosion rate for DTAB+C12OH was more pronounced than other mixtures.
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