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Journal of the Chilean Chemical Society

On-line version ISSN 0717-9707

Abstract

BAKIRHAN, N. K; ASAN, A; COLAK, N  and  SANLI, S. THE INHIBITION OF STEEL CORROSION IN ACIDIC SOLUTIONS BY A NEW SCHIFF BASE. J. Chil. Chem. Soc. [online]. 2016, vol.61, n.3, pp.3066-3070. ISSN 0717-9707.  http://dx.doi.org/10.4067/S0717-97072016000300012.

The inhibition effect of 2,2'- (((thiobis (4,1 phenylene)) bis(azanylylidene)) bis(methanylyidene)) bis(4-methoxyphenol) (BIS-IMIN) on the corrosion behavior of 304-stainless steel (SS) in 0.5 M HCl solution was studied by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization techniques. SEM, FT-IR, 1H-NMR, 13C-NMR methods used for characterization of BIS-IMIN. Potentiodynamic polarization curves indicated that BIS-IMIN act as mixed type inhibitor. The adsorption of the inhibitor was more suited with the Langmuir adsorption isotherm and kinetic parameters Kads, ΔGads Ea , ΔHads, ΔSads were determined at room temperature. The results showed that BIS-IMIN performed well inhibiting effect for the corrosion of the SS.

Keywords : Corrosion inhibitors; Stainless steel; potentiodynamic polarization; Electrochemical impedance spectroscopy.

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