Study of the mechanism and inhibiting efficiency of 3,5-bis(4-methylthiophenyl)-4H-1,2,4-triazole on mild steel corrosion in acidic media

Lagrenée, Michel; Mernari, B.; Bouanis, Marya; Traisnel, Michel; Bentiss, Fouad

doi:10.1016/s0010-938x(01)00075-0

Cited by 629 publications

(116 citation statements)

References 33 publications

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“…In the presence of chloride ions, having a smaller degree of hydration, the specific adsorption is expected to be pronounced. Being specifically adsorbed, they create an excess negative charge towards the solution and favour the electrostatic adsorption of the cations [63]. Thus, by means of electrostatic attraction, portonated gramine can reach mild steelsolution interface, be easily adsorbed and could transfer p electrons from the aromatic gramine ring to the d-orbital of iron atom.…”

Section: Adsorption Isothermmentioning

confidence: 99%

Inhibitive action of gramine towards corrosion of mild steel in deaerated 1.0M hydrochloric acid solutions

et al. 2012

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a b s t r a c tThe effect of addition of gramine on mild steel dissolution in deaerated 1.0 M hydrochloric acid was studied through potentiodynamic polarisation curves, electrochemical impedance spectroscopy and gravimetric measurements in the temperature range from 25°C to 55°C. Gramine was found to shift the corrosion potentials towards less noble values and decrease both dissolution of mild steel and hydrogen evolution reaction. Gramine did not affect the corrosion reaction mechanism (blocking effect). Results obtained from the several measurement techniques were in good agreement and revealed good inhibition efficiencies in the concentration range (0.75 mM Ä 7.5 mM) particularly at higher concentrations.

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Section: Adsorption Isothermmentioning

confidence: 99%

Inhibitive action of gramine towards corrosion of mild steel in deaerated 1.0M hydrochloric acid solutions

et al. 2012

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“…The used inhibitor was tested by six different concentrations and their corresponding corrosion rate with % protection efficiency (% IE) data at different temperature (25)(26)(27)(28)(29)(30)(31)(32)(33)(34)(35)(36)(37)(38)(39)(40) o C) are presented in Table 1. In figure1 give the weight loss-time curves for the corrosion of galvanized iron in 3.5% NaCl and 16 ppm Na 2 S solutions in the absence and presence of satirn at [25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40] o C. From the experimental data of the weight loss measurements, the % IE was calculated from Eq.…”

Section: Weight Loss Measurementsmentioning

confidence: 99%

“…In figure1 give the weight loss-time curves for the corrosion of galvanized iron in 3.5% NaCl and 16 ppm Na 2 S solutions in the absence and presence of satirn at [25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40] o C. From the experimental data of the weight loss measurements, the % IE was calculated from Eq. (1):…”

Section: Weight Loss Measurementsmentioning

confidence: 99%

“…So the mechanism of inhibition of the galvanized iron in 3.5% NaCl and 16 ppm Na 2 S by the phytochemical compounds of satirn explained basically on the adsorption on the metal surface [24] due to the presence of the phytochemical constituents. The adsorption of the inhibitor molecules on the metal surface is due to the donor -acceptor interaction between π electrons of donor atoms O and aromatic rings of inhibitor and the acceptor, i.e., vacant d orbital of iron surface atoms [25]. The inhibitor molecules also can be adsorbed in the form of negatively charged species on the metal surface which can interact electrostatically with positively charged metal surface, leading to increase the surface coverage and consequently protect efficiency even in case of low Satirn concentration.…”

Section: Mechanism Of Corrosion Inhibitionmentioning

confidence: 99%

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Satirn as pesticide inhibitor for the corrosion of the galvanized iron in wastewater and its biological effect on Escherichia coli

Fouda¹,

El-Khateeb²,

Fakih³

et al. 2015

Zas Mat

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“…Benzimidazole and triazole derivatives are well known corrosion inhibitors that showed more than 97% of inhibition against acid corrosion of mild steel [4], but they are also known for their toxicity [5,6,7]. Notably, the toxic nature of the known effective inhibitors of arsenate-and chromate-based has necessitated the search for an alternative inhibitor that would not only be efficacious but environmentally friendly.…”

Section: Introductionmentioning

confidence: 99%

Prognostic Model for Corrosion-Inhibition of Mild Steel in Hydrochloric Acid by Crushed Leaves of Voacanga Africana

Anyakwo¹

2017

IJCTC

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Abstract:The weight-loss technique was used to study the inhibition of the corrosion of mild steel in 0.7M, 1.2M and 2.2M HCl by thoroughly crushed fresh-leaves of Voacanga Africana. The corrosion rate was observed to increase with increase in the concentration of acid. The maximum inhibition efficiency of 69.80% was obtained when thoroughly crushed leaves of Voacanga Africana was added at 15g per litre of 0.7M HCl with a corresponding decrease in corrosion rate from 2.6487mg.cm -2 .h -1 to 1.3684mg.cm -2 .h -1 . The prediction of the corrosion rate by the artificial neural network gave a minimal error and was closer to the experimental corrosion-rate value in comparison with the prediction by multiple regression. Upon the variation of temperature between 298K and 358K, the activation energy obtained for the corrosion of mild steel in the blank solution of 0.7M HCl was 20,908.68J while the addition of Voacanga Africana's crushed leaves at 15g per litre of 0.7M HCl increased the activation energy to 26,710.26J. The corrosion inhibition of mild steel in hydrochloric acid by the addition of the crushed plant-leaves is in agreement with the Langmuir adsorption isotherm with R 2 = 0.992.

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Study of the mechanism and inhibiting efficiency of 3,5-bis(4-methylthiophenyl)-4H-1,2,4-triazole on mild steel corrosion in acidic media

Cited by 629 publications

References 33 publications

Inhibitive action of gramine towards corrosion of mild steel in deaerated 1.0M hydrochloric acid solutions

Inhibitive action of gramine towards corrosion of mild steel in deaerated 1.0M hydrochloric acid solutions

Satirn as pesticide inhibitor for the corrosion of the galvanized iron in wastewater and its biological effect on Escherichia coli

Prognostic Model for Corrosion-Inhibition of Mild Steel in Hydrochloric Acid by Crushed Leaves of Voacanga Africana

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