Journal ArticleDOI
Investigation on the corrosion inhibitive effect of 2H-pyrazole-triazole derivatives in acidic solution
TLDR
In this article, four research methods, such as weight loss test, electrochemical techniques, adsorption isotherm, and quantum chemical calculation, were employed to study the inhibition efficiency and inhibition mechanism of three 2H-pyrazole-triazole derivatives, BHOT, FHOT and CHOT in 1 M HCl solution for mild steel.Abstract:
Four research methods, such as weight loss test, electrochemical techniques, adsorption isotherm, and quantum chemical calculation, were employed in this paper to study the inhibition efficiency (IE) and inhibition mechanism of three 2H-pyrazole-triazole derivatives, BHOT, FHOT, and CHOT in 1 M HCl solution for mild steel. Using the electrochemical technique, three inhibitors were proved to show a mixed-type character for mild steel by suppressing both anodic and cathodic reactions on the steel surface. The adsorption models of three compounds were established at different temperatures according to their adsorption isotherms. The results of the quantum chemical calculation method indicated that the adsorption sites of 2H-pyrazole-triazole derivatives were strongly centralized on benzene ring, triazole ring, or other substituents. All the results showed that the three derivatives were excellent inhibitors in I M HCl solution for mild steel.read more
Citations
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Experimental, quantum chemical and Monte Carlo simulation studies of 3,5-disubstituted-4-amino-1,2,4-triazoles as corrosion inhibitors on mild steel in acidic medium
M. Elbelghiti,Y. Karzazi,A. Dafali,Belkheir Hammouti,Fouad Bentiss,Ime B. Obot,Indra Bahadur,Eno E. Ebenso +7 more
TL;DR: In this paper, the authors investigated the inhibition properties of two 3,5-bis (disubstituted)-4-amino-1, 2,4-triazole derivatives for mild steel corrosion in 2 M H3PO4 medium at 308 K using electrochemical impedance spectroscopy (EIS), Tafel polarization curves and weight loss measurements.
Journal ArticleDOI
Potent inhibition of copper corrosion in neutral chloride media by novel non-toxic thiadiazole derivatives
TL;DR: In this paper, the effect of two non-toxic thiadiazole derivatives on copper was investigated in 3.5% NaCl solution using weight loss and electrochemical measurements.
Journal ArticleDOI
Thermodynamic, electrochemical and quantum chemical evaluation of some triazole Schiff bases as mild steel corrosion inhibitors in acid media
TL;DR: In this article, three newly synthesized triazole Schiff bases (3-bromo-4-fluoro-benzylidene)-[1,2,4]triazol-4yl-amine (BFBT), (4-trifluoromethyl-benzmanyl-idene), and (1, 2, 4] triazol 4-ylamine (TMBT) were investigated as corrosion inhibitors on mild steel in 05 M hydrochloric acid by chemical (weight loss) and electrochemical (potenti
Journal ArticleDOI
Anti-corrosive properties of 4-amino-3,5-bis(disubstituted)-1,2,4-triazole derivatives on mild steel corrosion in 2M H3PO4 solution: Experimental and theoretical studies
M.E. Belghiti,Y. Karzazi,A. Dafali,Ime B. Obot,E.E. Ebenso,K.M. Emran,Indra Bahadur,Belkheir Hammouti,Fouad Bentiss +8 more
TL;DR: In this article, the corrosion inhibitory effect of two 3,5-bis(disubstituted)-4-amino-1,2,4-triazole derivatives for mild steel in 2M H3PO4 has been studied using electrochemical impedance spectroscopy (EIS), Tafel polarization curves and weight loss measurements.
Journal ArticleDOI
Effective inhibition of mild steel corrosion in 1 M hydrochloric acid using substituted triazines : an experimental and theoretical study
Sam John,Abraham Joseph +1 more
TL;DR: In this paper, the authors investigated the inhibition of mild steel corrosion in 1 M hydrochloric acid with three different 1,2,4-triazine precursors by polarization, electrochemical impedance (EIS), adsorption and computational calculations at room temperature.
References
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Journal ArticleDOI
Thermodynamic characterization of metal dissolution and inhibitor adsorption processes in mild steel/2,5-bis(n-thienyl)-1,3,4-thiadiazoles/hydrochloric acid system
TL;DR: In this article, the corrosion inhibition of mild steel in 1-M hydrochloric acid solution by some 2,5-bis n -thienyl)-1,3,4-thiadiazoles (n -TTH) has been studied in relation to the concentration of the inhibitors as well as the temperature using chemical (weight loss) and electrochemical (ac impedance and dc polarisation) techniques.
Journal ArticleDOI
Electrochemical impedance spectroscopy (EIS) of corrosion processes on inhomogeneous surfaces
TL;DR: In this article, the influence of surface inhomogeneities on corrosion processes is demonstrated by electrochemical impedance spectroscopy (EIS), and experimental impedance data obtained in different systems are discussed on the basis of transfer function analysis.
Journal ArticleDOI
Molecular Orbital Theoretical Studies of Some Organic Corrosion Inhibitors
V. S. Sastri,J. R. Perumareddi +1 more
TL;DR: In this article, molecular orbital theoretical calculations based on the modified neglect of differential overlap (MNDO) method were performed on some substituted methyl pyridines and substituted ethane derivatives in common use as corrosion inhibitors for iron in acid media.
Journal ArticleDOI
Tryptamine as a green iron corrosion inhibitor in 0.5 M deaerated sulphuric acid
TL;DR: In this paper, the inhibition effects of tryptamine (TA) on the corrosion behavior of ARMCO iron in 0.5 M deaerated H2SO4 (in the 25-55 °C temperature range) was studied in both short and long time tests (1, 24 and 72 h) by means of potentiodynamic curves (PCM) and electrochemical impedance spectroscopy (EIS).