MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Electrochemical and Quantum Chemical Studies of 1, 2, 3-Benzotriazole as Inhibitor for Copper and Steel in Simulated Tap Water
Yong-Sang KimJung-Gu Kim
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2017 Volume 58 Issue 1 Pages 76-84

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Abstract

The corrosion inhibition effect of benzotriazole on copper and steel in simulated tap water was investigated by using potentiodynamic polarization, electrochemical impedance spectroscopy and a quantum chemistry analysis. The corrosion inhibition efficiency for copper and steel was accordingly increased with an increasing of the benzotriazole concentrations. However, the electrochemical test showed a significant difference between the inhibition efficiency of copper and steel. From molecular theory and the adsorption isotherm, the difference between the d-orbital structure of copper and steel affects the adsorption stability of benzotriazole on the metal surface. This postulation is well correlated with the results of the quantum chemical analysis.

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© 2016 The Japan Institute of Metals and Materials
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