Electrochemical and quantum chemical studies of new thiadiazole derivatives adsorption on mild steel in normal hydrochloric acid medium

Lebrini, Mounim; Lagrenée, Michel; Vezin, Hervé; Gengembre, L.; Bentiss, Fouad

doi:10.1016/j.corsci.2004.06.001

Cited by 260 publications

(84 citation statements)

References 44 publications

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“…1,2 Usually, heterocyclic organic compounds with S, O or N atoms, as well as O electrons, are proved as the most effective corrosion inhibitors. [3][4][5][6] The reason why corrosion inhibitors can reduce the corrosion rate usually is ascribed to its adsorption to the metal and alloy surface. However, the mechanism of how heterocyclic organic compounds form the adsorption film on the metal surface yet is not resolved.…”

Section: Introductionmentioning

confidence: 99%

1-hydroxy Benzotriazole as Corrosion Inhibitor for Mild Steel in 1 mol/L Hydrochloric Acid Solution

Guo

et al. 2017

Electrochemistry

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The inhibition ability of 1-hydroxy benzotriazole (BTAOH) for mild steel in HCL solution (1 mol/L) had been investigated in this manuscript. The inhibition efficiency of BTAOH showed a maximum value around 48% at 303 K, with the concentration 1.5 × 10 −3 mol/L. The physical adsrobed BTAOH molecules are more stable attached onto the mild steel surface than the corrosion products. The similar free energy of adsorption (ΔG 0 ads ) but much lower IE were ascribed to the thicker but less compact film constructed by the zig-zag H-bond connected BTAOH polymers. According to the effects of concentration and temperature on the adsorption behavior of the BTAOH, we had calculated the ΔG

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Section: Introductionmentioning

confidence: 99%

1-hydroxy Benzotriazole as Corrosion Inhibitor for Mild Steel in 1 mol/L Hydrochloric Acid Solution

Guo

et al. 2017

Electrochemistry

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“…9 Since then, considerable researches on thiadiazole derivatives as corrosion inhibitors have been conducted for their good corrosion inhibition performances. [9][10][11][12][13][14] All the researches indicate that thiadiazole derivatives can be good corrosion inhibitors for metals in acid solution. In addition to inhibitive efficiency, the stability and inhibition mechanism of thiadiazole derivatives which are also extremely meaningful research contents have not been investigated in detail until now.…”

Section: Introductionmentioning

confidence: 99%

Study of Adsorption Behavior and Inhibition Mechanism of Mild Steel in Hydrochloric Acid by a Novel Thiadiazole Derivative

Cong

et al. 2015

Electrochemistry

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N′-(4-hydroxy-3-methoxybenzylidene)-2-(5-p-tolyl-1,3,4-thiadiazol-2-ylthio) acetohydrazide (HMTH) was studied as a novel corrosion inhibitor for carbon steel in hydrochloric acid solution by potentiodynamic polarization curves, electrochemical impedance spectroscopy (EIS), chronoamperometry (CA), cyclic voltammetry (CV) techniques and Quantum chemical calculation. The surface morphology of carbon steel in HCl solution in the absence and presence of HMTH was investigated by scanning electron microscopy (SEM). The mechanism of adsorption was determined from Fourier transform infrared spectroscopy (FTIR) and the potential of zero charge (E pzc ). HMTH was found to be an effective corrosion inhibitor by forming a stable adsorption layer on carbon steel.

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“…The activation parameters of the corrosion process in the studied range of temperature were calculated by means of the Arrhenius equation and transition state equation, respectively [18,19] (6) where E a is the apparent activation energy, R the universal gas constant, T the temperature, A the Arrhenius pre-exponential factor, N Avogadro's number, h Plank's constant, ∆S a the entropy of activation and ∆H a the enthalpy of activation.…”

Section: Cmss-2017mentioning

confidence: 99%

“…Environmentally friendly organic inhibitors containing heteroatoms N, O, and S in the molecules were reported to be effective inhibitors for metals and al alloys in an environment containing aggressive ions [4,5]. There are many studies deal with the corrosion inhibition effects of these organic compounds in acidic solutions, especially in the treatment of steel and ferrous alloys in hydrochloric or sulphuric acid [6][7][8]. However, very little literature is reported on the corrosion protection of carbon steel in neutral chloride medium, which leads to extensive general and localized pitting corrosion of carbon steel [9,10].…”

Section: Introductionmentioning

confidence: 99%

Inhibitive effect of N,N'-Dimethylaminoethanol on carbon steel corrosion in neutral sodium chloride solution, at different temperatures

et al. 2018

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Abstract. The inhibition of carbon steel corrosion in neutral sodium chloride solution by N,N'-Dimethylaminoethanol (DMEA), at different temperatures, was investigated using weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques. The results obtained confirm that DMEA is a good organic corrosion inhibitor for carbon steel in 0.5M of NaCl (concentration encountered in the Mediterranean seawater), over the whole range of temperatures studied. The inhibition efficiency (IE%) increases with increasing DMEA concentration; it reaches highest value for a concentration around 0.125 mol.L -1 . Potentiodynamic polarization data show that, the compound studied in this research predominantly act as anodic-type inhibitor. The EIS study reveals that the addition of DMEA decreases the corrosion rate of carbon steel in neutral sodium chloride solution, due to the fact that the inhibitor molecules are strongly adsorbed on the active sites following Langmuir isotherm, thus leading to the formation of a stable protective film on the steel surface which is able to keep the metal/solution interface in a passive state. Furthermore, the values of the activation parameters, i.e. ΔHa and Ea obtained in this study indicate that the adsorption process of DMEA is endothermic and could be mainly attributed to chemisorption, respectively.

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Electrochemical and quantum chemical studies of new thiadiazole derivatives adsorption on mild steel in normal hydrochloric acid medium

Cited by 260 publications

References 44 publications

1-hydroxy Benzotriazole as Corrosion Inhibitor for Mild Steel in 1 mol/L Hydrochloric Acid Solution

1-hydroxy Benzotriazole as Corrosion Inhibitor for Mild Steel in 1 mol/L Hydrochloric Acid Solution

Study of Adsorption Behavior and Inhibition Mechanism of Mild Steel in Hydrochloric Acid by a Novel Thiadiazole Derivative

Inhibitive effect of N,N'-Dimethylaminoethanol on carbon steel corrosion in neutral sodium chloride solution, at different temperatures

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