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

doi:10.1023/a:1020161332235

Cited by 103 publications

(41 citation statements)

References 21 publications

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“…This behavior may be attributed to the results of synergistic effect between KI and DDA. The synergistic parameter (S) can be further used to reveal the effect between two compounds [1,6,10,24,25]. Generally speaking, S is a good parameter to investigate the synergistic inhibition of two inhibitors.…”

Section: Synergistic Parametermentioning

confidence: 99%

“…Inhibitors are usually used to control the corrosion processes of the metal. Inhibitors are compounds that control, reduce, or prevent reactions between a metal and its surroundings when added to the medium in small quantities [1,2]. In most inhibitor studies, the formation of donor-acceptor surface complexes between free or p-electrons of an inhibitor and vacant dorbital of the metal was proposed [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

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Synergistic inhibition between dodecylamine and potassium iodide on the corrosion of cold rolled steel in 0.1 M phosphoric acid

Hao

Jiang

et al. 2008

Materials & Corrosion

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The corrosion inhibition of cold rolled steel in 0.1 M aerated phosphoric acid (H 3 PO 4 ) in the presence of dodecylamine (DDA) and potassium iodide (KI) has been investigated by Tafel polarization curve and electrochemical impedence spectroscopy (EIS) at 20 8C. The results obtained from polarization curve show that the inhibition efficiency of DDA with and without KI increases with increase in concentration of DDA but the inhibition efficiency of DDA without KI is not too high. A synergistic effect exists when DDA and KI are combined together to prevent cold rolled steel corrosion in 0.1 M H 3 PO 4 . All impedance spectra in EIS tests exhibit one capacitive loop which indicates that the corrosion reaction is controlled by charge transfer process. Inhibition efficiencies obtained from Tafel polarization, transfer resistance (R t ) are consistent.

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Section: Synergistic Parametermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synergistic inhibition between dodecylamine and potassium iodide on the corrosion of cold rolled steel in 0.1 M phosphoric acid

Hao

Jiang

et al. 2008

Materials & Corrosion

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“…As far as weak anodic potentials are concerned, the anodic current density slightly increases with overvoltage. When the desorption potential (Ed) or (non-polarizability) [29][30][31] is exceeded, clays virtually have no effect on anodic curves, the anodic current density swiftly increases and the metal is dissolved with a steeper slope in the area of high potentials. The abrupt increase of the anodic current density after the desorption potential is attributable to desorption of clay molecules adsorbed at the steel surface, which shows clearly that the mode of inhibition of this compound depends on the electrode potential.…”

Section: Polarization Curvesmentioning

confidence: 99%

Clays valorization as corrosion inhibitors for E400 reinforcing steel

Gassama

Fall

Yade

et al. 2016

Ovidius University Annals of Chemistry

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Abstract. The behavior of E400 steel, a constructional steel widely used in Senegal, was studied in aqueous NaCl solution in the presence of two types of clay: volcanic tuffs, and sedimentary montmorillonite. The protection efficiency of these compounds were electrochemically assessed (corrosion potential variation curves, polarization curves and electrochemical impedance spectroscopy) at various inhibitor contents. The results obtained showed that these inhibitors present an inhibitory efficacy of about 70% for an optimal concentration of 0.60% for the tuffs and 62% for a maximum content of 0.50% for montmorillonite.

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“…The presence of iodide anion in the molecule of tetraphenyl phosphonium iodide increases the inhibition. [14][15][16][17] The comparative study of this phosphonium, tetraphenyl phosphonium iodide with phosphonium chloride salts reported by K.F. Khaled revealed that this phosphonium salt is the convenient inhibitor.…”

Section: 11mentioning

confidence: 99%

A Comparative electrochemical study on corrosion inhibition of iron by synthesized tetraphenyl phosphonuim iodide in acid media

Mansouri¹,

Sekhri²,

Rahim³

et al. 2016

Orient. J. Chem

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The present work is aimed mainly to synthesize a phosphonuim salt, tetraphenylphosphonuim iodide, and evaluate inhibitive effect against carbon steel corrosion in aerated 1 M HCl solutions. Thus, tetraphenylphosphonuim iodide was synthesized by the reaction of of an equimolar quantity of a solution of phenyl iodide and triphenyl phosphine in toluene (84% yield). We have found that, the use of toluene for this reaction of triphenyl phosphine with aryl or alkyl iodide is a convenient synthesis of many phosphonium salts since the halogen as a leaving group (requires a temperature higher than boiling point of chloroform.The purity of this compound was estimated by TLC technique and microanalysis, while its structure was supported by the usual spectroscopic methods such as UV, infrared, 1 H. NMR and 13 C. NMR. Exploration of the Corrosion measurements based on polarization resistance (Rp), potentiodynamic polarization curves indicates that tetraphenylphosphonuim iodide, in most cases act as strong inhibitors. Tetraphenylphosphonuim iodide acts as anodic type inhibitors with predominant effect on the anodic dissolution of iron. Analysis of the polarization curves indicates that charge transfer process mainly controls carbon steel corrosion in HCl solution without and with phosphonuim salt. The mechanism of corrosion inhibition by phosphonuim; salt was discussed in the light of the molecular structure of the additive. A Comparative electrochemical study with that reported in the literature revealed that the efficiency of the inhibitors follows the order: tetraphenyl phosphonum iodide >(chloromethyl) triphenyl phosphonium chloride (CTP) > tetraphenyl phosphonum chloride (TP) > triphenyl phosphine oxide (TPO) > triphenyl (phenylmethyl) phosphonium chloride (TPM).

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Cited by 103 publications

References 21 publications

Synergistic inhibition between dodecylamine and potassium iodide on the corrosion of cold rolled steel in 0.1 M phosphoric acid

Synergistic inhibition between dodecylamine and potassium iodide on the corrosion of cold rolled steel in 0.1 M phosphoric acid

Clays valorization as corrosion inhibitors for E400 reinforcing steel

A Comparative electrochemical study on corrosion inhibition of iron by synthesized tetraphenyl phosphonuim iodide in acid media

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