Influence of 4‐amino‐5‐mercapto‐3n‐propyl‐1‐2‐4‐triazole on the corrosion and permeation of hydrogen through mild steel in acidic solutions

M.A. Quraishi (M.A. Quraishi is based in the Department of Applied chemistry, Z.H. College of Engineering & Technology, Aligarh Muslim University, Aligarh, India.)
S. Muralidharan (S. Muralidharan and S.V.K. Iyer are both based at the Central Electrochemical Research Institute, Karaikudi, Tamil Nadu, India.)
S.V.K. Iyer (S. Muralidharan and S.V.K. Iyer are both based at the Central Electrochemical Research Institute, Karaikudi, Tamil Nadu, India.)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Publication date: 1 December 2000

Abstract

The influence of 4‐amino‐5‐mercapto‐3 n‐propyl‐1‐2‐4‐triazole (AMPT) on corrosion and hydrogen permeation through mild steel in 0.5M H2SO4 and 1M HCl has been studied using weight loss measurements and various electrochemical techniques. AMPT is found to be more inhibitive in H2SO4 than in HCl. Potentiodynamic polarisation studies clearly prove the fact that this compound behaves as a mixed inhibitor; but predominantly as a cathodic inhibitor. Hydrogen permeation studies and AC impedance measurements also indicate an improved performance of the compound in H2SO4. The adsorption of this compound on the mild steel surface obeys Temkin’s adsorption isotherm.

Keywords

Citation

Quraishi, M., Muralidharan, S. and Iyer, S. (2000), "Influence of 4‐amino‐5‐mercapto‐3n‐propyl‐1‐2‐4‐triazole on the corrosion and permeation of hydrogen through mild steel in acidic solutions", Anti-Corrosion Methods and Materials, Vol. 47 No. 6, pp. 354-359. https://doi.org/10.1108/00035590010357930

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MCB UP Ltd

Copyright © 2000, MCB UP Limited

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