Adsorption and corrosion inhibition properties of 5-amino 1,3,4-thiadiazole-2-thiol on the mild steel in hydrochloric acid medium: Thermodynamic, surface and electrochemical studies - Archive ouverte HAL Access content directly
Journal Articles Journal of Electroanalytical Chemistry Year : 2017

Adsorption and corrosion inhibition properties of 5-amino 1,3,4-thiadiazole-2-thiol on the mild steel in hydrochloric acid medium: Thermodynamic, surface and electrochemical studies

(1) , (2) , (1) , (1) , (3) , (4) , (2, 5)
1
2
3
4
5

Abstract

The inhibition effect of 5-amino 1,3,4-thiadiazole-2-thiol (5-ATT) on the corrosion of mild steel in 1 M HCl solution at 303 K was studied practicing weight loss, electrochemical electrochemical (AC and DC) studies and Xray photoelectron spectroscopy (XPS) methods. The obtained results showed that 5-ATT was an effective inhibitor in HCl medium. The inhibition efficiency, eta(%), increased with the increase in concentration inhibitor but the temperature has almost no effect on the inhibition efficiency of 5-ATT. The activation dissolution thermodynamic parameters were calculated and discussed. Thermodynamic data and XPS analysis clearly show that the adsorption mechanism of 5-ATT on the mild steel surface in 1 M HCl solution is mainly electrostatic-adsorption. Tafel curves reveal that 5-ATT behaves as a mixed-type inhibitor with cathodic predominance and obeyed Langmuir adsorption isotherm. With the aim of extracting the parameters of the electrochemical impedance spectroscopy an appropriate equivalent circuit model was offered.
Not file

Dates and versions

hal-02619688 , version 1 (25-05-2020)

Identifiers

Cite

Houari Ouici, M Tourabi, O. Benali, C. Selles, Charafeddine Jama, et al.. Adsorption and corrosion inhibition properties of 5-amino 1,3,4-thiadiazole-2-thiol on the mild steel in hydrochloric acid medium: Thermodynamic, surface and electrochemical studies. Journal of Electroanalytical Chemistry, 2017, 803, pp.125-134. ⟨10.1016/j.jelechem.2017.09.018⟩. ⟨hal-02619688⟩

Collections

UNIV-LILLE INRAE
7 View
0 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More