Alcamines as corrosion inhibitors for reinforced steel and their effect on cement based materials and mortar performance

Fouda, A. S.; Elewady, G. Y.; Shalabi, K.; El-Aziz, Hassan K. Abd

doi:10.1039/c5ra00717h

Cited by 68 publications

(19 citation statements)

References 40 publications

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“…there is a causal relationship between the perturbation signal and the response signal. Then the data are assumed to be reliable (42). The great strength of the EFM is the causality factors which serve as an internal check on the validity of the EFM.…”

Section: Efm Measurementsmentioning

confidence: 99%

Ceratonia siliqua extractas a green corrosion inhibitor for copper and brass in nitric acid solutions

Fouda

Shalabi

Idress

2015

Green Chemistry Letters and Reviews

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The influence of extract of ceratonia siliqua extract on the corrosion of copper and brass in aqueous 1 M nitric acid was examined by weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy and electrochemical frequency modulation techniques. The surface morphology was analyzed using scanning electron microscope and energy dispersive X-ray techniques. Potentiodynamic polarization curves indicated that the plant extract behaves as cathodic inhibitor. The results indicate that the extract solution of the plant could serve as an effective inhibitor for the corrosion of copper and brass in nitric acid media. As temperature increases, percentage of inhibition decreases. The degree of surface coverage of the adsorbed inhibitor was determined by weight-loss technique, and it was found that the results obeyed the Langmuir adsorption isotherm. ARTICLE HISTORY

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Section: Efm Measurementsmentioning

confidence: 99%

Ceratonia siliqua extractas a green corrosion inhibitor for copper and brass in nitric acid solutions

Fouda

Shalabi

Idress

2015

Green Chemistry Letters and Reviews

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“…The corrosion rate decreases about 11 times in the presence of the extracts, demonstrating the inhibiting effect on steel corrosion processes. This is likely due to the phenolic components of the extract interacting with the surface of the metal, blocking active metal sites …”

Section: Resultsmentioning

confidence: 99%

Evaluation of Eulychnia acida and Echinopsis chiloensis (Cactaceae) extracts in inhibiting corrosion of carbon steel in HCl solution

Figueredo

Vera

Molinari

2019

Materials & Corrosion

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In the present study, the activity of extracts obtained from the stems of two endemic species of the central–northern region of Chile (Eulychnia acida [Copao] and Echinopsis chiloensis [Quisco]), was evaluated as potential corrosion inhibitors for carbon steel in 0.1 M HCl. The total content of phenols and flavonoids in the extracts was determined, and the main components were identified by high‐performance liquid chromatography–mass spectrometry, being similar in both species. The inhibition efficiency of extracts was evaluated by mass loss measures, Tafel polarization curves, and electrochemical impedance spectroscopy. The assay results showed similar values in inhibition percentages, around 88% at extract concentrations of 1,500 ppm. The adsorption on the steel surface followed the Langmuir model adsorption isotherm, whose thermodynamic parameters (ΔG°ads for Copao and Quisco, −17.81 and −17.70 kJ/mol, respectively) suggest a physisorption mechanism. The scanning electron microscopy analyses showed that in the presence of the extracts, the surface of the steel is covered by a thin film that allows the sanding marks to be visualized; while without the extracts the surface is rough due to the HCl corrosion effect.

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“…Aniline derivatives are protonated in presence of 0.3 M oxalic acid in electropolymerization medium. Several authors [5,21,22] reported that the protonated aniline derivatives are adsorbed at the steel surface through bridge of counter anions (oxalate anion in this case). …”

Section: Adsorption Of Tween 80 At the Steel/solution Interfacementioning

confidence: 99%

Corrosion protection of steel by electropolymerization of o-chloroaniline and o-aminobenzoic acid in the presence of Tween 80 surfactant

2018

Int. J. Corros. Scale Inhib.

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The conducting polymers, poly-o-chloroaniline and poly-o-aminobenzoic acid have been synthesized from their monomers on steel surface by cyclic voltammetry method in aqueous oxalic acid solution containing different concentrations of Tween 80 surfactant. The polymers were characterized by scanning electron microscope SEM. Potentiodynamic polarization and electrochemical impedance spectroscopy EIS techniques have been used to investigate the corrosion behavior of the polymer coated steel electrodes in 0.5 M H 2 SO 4 solution. Effect of the surfactant on the electropolymerization process and the protection efficiency of the polymerized coat have been studied. Effect of substituent in the molecule of the monomer on the protection efficiency of the polymerized coat has been also studied.

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Alcamines as corrosion inhibitors for reinforced steel and their effect on cement based materials and mortar performance

Abstract: Testing steel in solution has the advantage of avoiding the long time necessary for chlorides to penetrate the concrete cover.

Cited by 68 publications

References 40 publications

Ceratonia siliqua extractas a green corrosion inhibitor for copper and brass in nitric acid solutions

Ceratonia siliqua extractas a green corrosion inhibitor for copper and brass in nitric acid solutions

Evaluation of Eulychnia acida and Echinopsis chiloensis (Cactaceae) extracts in inhibiting corrosion of carbon steel in HCl solution

Corrosion protection of steel by electropolymerization of o-chloroaniline and o-aminobenzoic acid in the presence of Tween 80 surfactant

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