Effect of 3-aminotriazole on the corrosion of copper in polluted and unpolluted media

The inhibition of copper corrosion in unpolluted or polluted 3.5% NaCl solution in the absence and presence of 3-amino-1, 2, 4-triazole （ATA） as a corrosion inhibitor was studied by using different electrochemical techniques. Aminotriazole （ATA） is well known as corrosion inhibitor for corrosion of copper and aluminum in unpolluted salt water. The influence of 3-aminotriazole （ATA） on the corrosion behavior of copper in unpolluted and polluted environment has been studied using potentiodynamie and potentiostatic polarization methods. Surface morphological examinations such as SEM, EDS and XPS have also been carried out to understand the mechanism of inhibition of corrosion. Electrochemical measurements and morphological results are clearly show that the inhibitor is strongly adsorbed on the copper surface and form a protective film on the copper surface.