Synergistic effect of thiourea derivatives and non‐ionic surfactants on the inhibition of corrosion of carbon steel in acid environments

D. Gopi (D. Gopiis based in the Analytical Chemistry Department, University of Madras, Guindy Campus, Chennai, India.)
N. Bhuvaneswaran (N. Bhuvaneswaranis based in the Analytical Chemistry Department, University of Madras, Guindy Campus, Chennai, India.)
S. Rajeswarai (S. Rajeswarai is based in the Analytical Chemistry Department, University of Madras, Guindy Campus, Chennai, India.)
K. Ramadas (K. Ramadas is at SPIC Science Foundation, Guindy, Chennai, India.)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Publication date: 1 December 2000

Abstract

Some thiourea derivatives, non‐ionic surfactants and their synergism when used simultaneously were evaluated for their efficiency as corrosion inhibitors for mild steel in 1N H2SO4 solution at different temperatures (303, 313 and 323K). A marked inhibition synergism occurred within an optimum concentration range even at higher temperature. The thiourea derivatives obey the Langmuir adsorption isotherm. The effect of these compounds on the corrosion behaviour of carbon steel was studied using open circuit potential measurements and potentiodynamic polarization measurements. These data were utilized to calculate activation energy.

Keywords

Citation

Gopi, D., Bhuvaneswaran, N., Rajeswarai, S. and Ramadas, K. (2000), "Synergistic effect of thiourea derivatives and non‐ionic surfactants on the inhibition of corrosion of carbon steel in acid environments", Anti-Corrosion Methods and Materials, Vol. 47 No. 6, pp. 332-339. https://doi.org/10.1108/00035590010354050

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MCB UP Ltd

Copyright © 2000, MCB UP Limited

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