Abstract
The inhibition efficiency of the formulation consisting of Triisopropanol amine (TIPA) and Zn 2+ in controlling the corrosion of mild steel in aqueous solution containing 60 ppm Cl - has been evaluated by the weight loss method. The formulation consisting of 100 ppm TIPA, and 50 pm Zn 2+ has 62.5% inhibition efficiency TIPA alone has 46% efficiency. The nature of the protective film has been analyzed by polarization study, AC impedance spectra. A suitable mechanism of corrosion inhibition is proposed based on the results obtained from the weight loss method, polarized study, AC impedance spectra and FTIR spectra. Keywords: Synergism, TIPA, Polarization study, AC impedance and FTIR spectra.
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