Electrochemical Studies of the Inhibition Effect of 2-Dimethylaminoethanol on the Corrosion of Austenitic Stainless Steel Type 304 in Dilute Hydrochloric Acid

Loto, Roland Tolulope; Loto, C. A.; Popoola, A. P. I.; Fedotova, T.

doi:10.1007/s12633-015-9344-1

Cited by 29 publications

(17 citation statements)

References 50 publications

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“…Most compounds of synthetic origin are toxic, environmentally unfriendly and of high cost; thus, there is a need for low-cost, highly effective compounds [18]. Thiourea derivatives and p-phenylenediamine have been studied individually in previous research for corrosion inhibition properties with mixed results [19][20][21][22][23]; however, this research aims to study the synergistic effect of n,n diphenylthiourea and p-phenylenediamine as corrosion inhibitor for low carbon steel in 1 M sulphuric and 0.5 M hydrochloric acid.…”

Section: Introductionmentioning

confidence: 99%

Synergistic effect p-phenylenediamine and n,n diphenylthiourea on the electrochemical corrosion behaviour of mild steel in dilute acid media

2015

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Electrochemical studies of the synergistic effect of p-phenylenediamine and n,n diphenylthiourea (TPD) as corrosion inhibitor of mild steel in dilute sulphuric and hydrochloric acid through weight loss and potentiodynamic polarization at ambient temperature were performed. Experimental results showed the excellent performance of TPD with an optimal inhibition efficiency of 88.18 and 93.88 % in sulphuric and 87.42 and 87.15 % in hydrochloric acid from both tests at all concentration studied. Polarization studies show the compound to be a mixed-type inhibitor. Adsorption of deanol on the steel surface was observed to obey the Langmuir and Frumkin isotherm models. X-ray diffractometry confirmed the absence of corrosion products and complexes. Optical microscopy confirmed the selective inhibition property of TPD to be through chemical adsorption on the steel surface.

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Section: Introductionmentioning

confidence: 99%

Synergistic effect p-phenylenediamine and n,n diphenylthiourea on the electrochemical corrosion behaviour of mild steel in dilute acid media

2015

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“…While the corrosion rate of PLCS in HCl is relatively smaller than the value obtained in H 2 SO 4 at 0% MTH, it significantly differs from the values obtained at specific concentrations of MTH. The largest difference in corrosion potential of PLCS (in both acids) from 0% MTH shows MTH ia an anodic type inhibitor in H 2 SO 4 and cathodic type in HCl [18].…”

Section: Potentiodynamic Polarization Studiesmentioning

confidence: 94%

Inhibition effect of the synergistic properties of 4-methyl-norvalin and 2-methoxy-4-formylphenol on the electrochemical deterioration of P4 low carbon mold steel

Loto

Ogaga

2020

Open Engineering

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AbstractStudy of the synergistic inhibition properties of the combined admixture of 4-methyl-norvalin and 2-methoxy-4-formylphenol (non-toxic organic compounds) on the corrosion of P4 low carbon mold steel in 1.5 M H2SO4 and HCl solution was performed with weight loss measurement, potentiodynamic polarization and optical microscopy analysis. Results obtained showed the inhibition efficiency of the admixed compound performed above the value for effective corrosion inhibition at very low concentrations in H2SO4 solution. However, from mid concentration to the highest concentration studied, the inhibition efficiency of the compound was above 85% from electrochemical tests. In HCl solution the inhibition efficiency of the compound was well above 80% and 90% for weight loss and polarization tests at all concentration studied. Anodic corrosion inhibition mechanism was determined for the compound in H2SO4 according to Freundlich and Frumkin adsorption isotherms due to weak Van der Waals attraction between the inhibitor molecules and the steel’s surface. The mechanism of corrosion inhibition in HCl was calculated to be cathodic type according to Langmuir isotherm model.Morphological images of inhibited and non-inhibited steel surfaces significantly contrast each other though the extent of deterioration was much severe for the steel from H2SO4 solution.

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“…It was observed that BTEAC become less effective with increase in temperature (Idris et al, 2013). Loto et al (2016) have investigated electrochemical studies of inhibition effect of 2-Dimethylaminoethanol Uwiringiyimana et al 25…”

Section: Corrosion Inhibition Of Stainless Steelsmentioning

confidence: 99%

The effect of corrosion inhibitors on stainless steels and aluminium alloys: A review

Uwiringiyimana¹,

Sylvester²,

Joseph³

et al. 2016

Afr. J. Pure Appl. Chem.

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Electrochemical Studies of the Inhibition Effect of 2-Dimethylaminoethanol on the Corrosion of Austenitic Stainless Steel Type 304 in Dilute Hydrochloric Acid

Cited by 29 publications

References 50 publications

Synergistic effect p-phenylenediamine and n,n diphenylthiourea on the electrochemical corrosion behaviour of mild steel in dilute acid media

Synergistic effect p-phenylenediamine and n,n diphenylthiourea on the electrochemical corrosion behaviour of mild steel in dilute acid media

Inhibition effect of the synergistic properties of 4-methyl-norvalin and 2-methoxy-4-formylphenol on the electrochemical deterioration of P4 low carbon mold steel

The effect of corrosion inhibitors on stainless steels and aluminium alloys: A review

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