Abstract

J. Jeyasundari* and Y. Brightson Arul Jacob

The synergistic effect of THAM –Molybdate and Zn²⁺ on the inhibition of corrosion of mild steel in aqueous environment containing 60 ppm Cl- has been evaluated by the weight loss method. The mechanistic aspects of corrosion inhibition have been studied. The nature of the protective film has been analyzed by using potentiostatic polarization study, impedance spectra, U.V-visible absorption spectra and fluorescence spectra. The formulation consisting of THAM (50ppm) and 50 ppm of Zn²⁺- SM (250 ppm) has 82% corrosion inhibition efficiency.

Synergistic effect; Corrosion inhibition; Carbon steel; AC impedance; FTIR

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