Inhibition of chloride localized corrosion of mild steel by PO43−, CrO42−, MoO42−, and NO2− anions

Refaey, S.A.M.; El‐Rehim, Sayed S. Abd; Taha, Fouad; Saleh, Mohamed B.; Abdiche, A.

doi:10.1016/s0169-4332(00)00016-7

Cited by 119 publications

(62 citation statements)

References 10 publications

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“…Damage can be prevented by adding the corrosion inhibitor to the concrete mixture or by treating the rebars prior to building the structure. Chromate, phosphate, nitrite, tungstate and molybdate ions have been investigated in terms of their ability to inhibit the pitting corrosion of steel [9,[11][12][13].…”

Section: Of 43mentioning

confidence: 99%

Phosphate ions as corrosion inhibitors for reinforcement steel in chloride-rich environments

Yohai¹,

Vázquez²,

Valcarce³

2013

Electrochimica Acta

142

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Please cite this article as: L. Yohai, M. Vázquez, M.B. Valcarce, Phosphate ions as corrosion inhibitors for reinforcement steel in chloride-rich environments, Electrochimica Acta (2013), http://dx.doi.org/10. 1016/j.electacta.2013.03.180 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Micro Raman spectra clearly show the incorporation of phosphates to the passive film.Impedance spectroscopy results can be interpreted assuming a duplex surface film formed in the presence of phosphates. In the conditions of this investigation, phosphate ions behave as mixed-type corrosion inhibitors, protecting steel against corrosion in chloride-contaminated environments.

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Section: Of 43mentioning

confidence: 99%

Phosphate ions as corrosion inhibitors for reinforcement steel in chloride-rich environments

Yohai¹,

Vázquez²,

Valcarce³

2013

Electrochimica Acta

142

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“…During the anodic polarization of the working electrode the negative phosphate ions (PO 4 −3 ) adsorb on the electrode surface. Due to the competitive adsorption of the phosphate and chloride ions, less of the aggressive Cl − ions can reach the surface and the pitting potential pit moves towards positive potentials [38].…”

Section: Potentiodynamic Polarization Scans In Phosphate Buffermentioning

confidence: 99%

Electrolyte Composition for Distinguishing Corrosion Mechanisms in Steel Alloy Screening

Bösing

Thöming

Baune

2017

International Journal of Corrosion

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The formation and breakdown of passive layers due to pitting corrosion are a major cause of failure of metal structures. The investigation of passivation and pitting corrosion requires two different electrochemical measurements and is therefore a time consuming process. To reduce time in material characterization and to study the interactions of both mechanisms, here, a combined experiment addressing both phenomena is introduced. In the presented electrolyte the different corrosion mechanisms are distinguished and investigated by cyclic voltammograms and polarization scans. The measurements show a passive area, metastable pit growth, and pitting corrosion as well as repassivation. The pitting corrosion is separated from additional dissolution processes and the standard deviation of the corrosion potential is smaller than in other electrolytes. Both passivation and pitting corrosion can be observed in one measurement without additional corrosion attacks. The deviation between different measurements of the same steel is small; this is helpful for the screening of similar materials.

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“…In the passive state, the Cl − ion can be adsorbed on the base metal surface in competition with OH − ions. As a result of high polarizability of the Cl − ions, the Cl − ions may adsorb preferentially [40]. The cyclic voltammetry parameters are given in Table 8.…”

Section: Atomic Force Microscopy Characterizationmentioning

confidence: 99%

Corrosion Inhibition Effect of Carbon Steel in Sea Water by L-Arginine-Zn²⁺System

Gowri

Sathiyabama

Rajendran

2014

International Journal of Chemical Engineering

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The inhibition efficiency of L-Arginine-Zn 2+ system in controlling corrosion of carbon steel in sea water has been evaluated by the weight-loss method. The formulation consisting of 250 ppm of L-Arginine and 25 ppm of Zn 2+ has 91% IE. A synergistic effect exists between L-Arginine and Zn 2+ . Polarization study reveals that the L-Arginine-Zn 2+ system functions as an anodic inhibitor and the formulation controls the anodic reaction predominantly. AC impedance spectra reveal that protective film is formed on the metal surface. Cyclic voltammetry study reveals that the protective film is more compact and stable even in a 3.5% NaCl environment. The nature of the protective film on a metal surface has been analyzed by FTIR, SEM, and AFM analysis.

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Inhibition of chloride localized corrosion of mild steel by PO43−, CrO42−, MoO42−, and NO2− anions

Cited by 119 publications

References 10 publications

Phosphate ions as corrosion inhibitors for reinforcement steel in chloride-rich environments

Phosphate ions as corrosion inhibitors for reinforcement steel in chloride-rich environments

Electrolyte Composition for Distinguishing Corrosion Mechanisms in Steel Alloy Screening

Corrosion Inhibition Effect of Carbon Steel in Sea Water by L-Arginine-Zn²⁺System

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Inhibition of chloride localized corrosion of mild steel by PO43−, CrO42−, MoO42−, and NO2− anions

Cited by 119 publications

References 10 publications

Phosphate ions as corrosion inhibitors for reinforcement steel in chloride-rich environments

Phosphate ions as corrosion inhibitors for reinforcement steel in chloride-rich environments

Electrolyte Composition for Distinguishing Corrosion Mechanisms in Steel Alloy Screening

Corrosion Inhibition Effect of Carbon Steel in Sea Water by L-Arginine-Zn2+System

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Product

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Corrosion Inhibition Effect of Carbon Steel in Sea Water by L-Arginine-Zn²⁺System