Journal of Chemical and Pharmaceutical Research (ISSN : 0975-7384)

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Original Articles: 2012 Vol: 4 Issue: 2

Corrosion a universal environmental Problem: a role of Schiff base metal complexes as inhibitors

Abstract

The weight loss technique has been used to study the corrosion inhibition of mild steel in 0.1N HNO3 acidic medium by the Schiff base 4-Chloro-2-(2-oxo-1, 2-dihydro-indol-3-ylidene amino)-benzoic acid (ACBAI) and their Titanium (IV), Zirconium (IV), Cadmium (II) and Mercury (II) metal complexes. Thus, inhibition efficiency was obtained of Schiff base and its metal complexes. The phenomenon of chemical adsorption form thin film on the surface of the material that stops access of the corrosive substance to the metal which increases in its inhibition efficiency.