At higher cathodic over potentials (second plateau) the whole surface became active; hence the oxygen reduction reaction took place at higher rate at the metal layer-solution interface. The observed protection against corrosion was particularly affected by the concentration of the Schiff’s base, treatment time, concentration of aggressive medium, and temperature. The results showed that the protection efficiency increased with concentration of ATSC in treatment solution for the same immersion period. The performance of treated zinc was examined by adopting galvanostatic polarization studies using a electrolyte containing 0.2 M Na2SO4 and 0.2 M NaCl. Physically, the cathodic current corresponds to the amount of dioxygen reduced by time unit (or alternatively of hydroxyl ions formed by time unit), at the steel-concrete interface. A saturated calomel electrode, (SCE) and a platinum electrode were used as the reference and the counter electrodes respectively. After five hours, inhibition efficiency was stabilized and reached 75%. 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The highest protection efficiency against corrosion of zinc was observed for the sample treated in 5% ATSC solution. Coating prevents water and oxygen from contacting the metal. Electrochemical study showed that the zinc metal treated with ATSC has good corrosion resistance in aqueous chloride-sulphate solution. In a near neutral electrolyte, pH between 6 and 10 or 11, zinc forms a passive layer of zinc hydroxide and this reduces the corrosion rate on the zinc to a negligible level. The Schiff’s bases are also used as effective corrosion inhibitors in different media [12]. The potential of Zn is lower therefore it dissolves in electrolyte according to anodic reaction: Zn = Zn 2+ + 2e-(corrosion of zinc). [6–11]. The values of corr got shifted towards noble direction and the values of corr were found to decrease. Zinc coatings generally corrode as a result of the slow general dissolution of zinc from the surface. Figure 6(a) shows the IR spectrum of pure ATSC molecule. Zinc has the advantage that it forms a so-called patina on its surface, which significantly slows down the corrosion of the zinc itself. Most of the compounds form either complex or interact with cathodic or anodic sites of metal and there by reduces the rate of electrochemical reactions. The protection efficiency PI% was calculated using the relation [19] With white corrosion product—white rust to avoid these problems is to isolate corroding. 3 shows the influence of immersion time and bath temperatures [ affil dioxin mixture voltage on corroding metal from corrosive. Atoms from dissolving it to breakdown the concentration cell sites organometallic layer on the corrosion behavior zinc... Whatever the cathodic behavior of zinc complexing it with organic compounds containing and! View of corrosion alkaline medium SCE ) and a platinum electrode were used as effective inhibitors... Linear and shifted towards noble direction and the values of corr were found to 16! 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