Experimental and theoretical investigation of 3-amino-1,2,4-triazole-5-thiol as a corrosion inhibitor for carbon steel in HCl medium

Mert B. D. , Mert M. E. , KARDAŞ G. , Yazici B.

CORROSION SCIENCE, cilt.53, ss.4265-4272, 2011 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 53 Konu: 12
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1016/j.corsci.2011.08.038
  • Sayfa Sayıları: ss.4265-4272


The inhibition effect of 3-amino-1,2,4-triazole-5-thiol (3ATA5T) was investigated in 0.5 M HCl on carbon steel (CS) by electrochemical impedance spectroscopy and potentiodynamic measurements at various concentrations and temperatures. Results showed that the correlation between experimental (inhibition efficiencies. Delta G(ads), E-a) and quantum calculation parameters (dipole moment, E-HOMO, E-LUMO). The high inhibition efficiency was declined in terms of strongly adsorption of protonated inhibitor molecules on the metal surface and forming a protective film. (C) 2011 Elsevier Ltd. All rights reserved.