ChemInform Abstract: MECHANISM OF THE CORROSION INHIBITION OF ZN ANODE IN NAOH BY GELATINE AND SOME INORGANIC ANIONS

Azim, A. A. Abdul; Shalaby, Laila A.; Abbas, Hossam H.

doi:10.1002/chin.197412037

Cited by 2 publications

(3 citation statements)

References 1 publication

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“…The slope of the inh / versus inh plots shows deviation from unity, which means nonideal simulating [13] and being unexpected from the Langmuir adsorption isotherm. It might be the results from the interactions between the adsorbed species on the mild steel surface [14,15]. Adsorption equilibrium constant ( ads ) and free energy of adsorption (Δ o ads ) were calculated using the relationships:…”

Section: Adsorption Isothermmentioning

confidence: 99%

Inhibition of Mild Steel Corrosion in Sulphuric Acid Using Esomeprazole and the Effect of Iodide Ion Addition

Karthik

Sundaravadivelu

2013

ISRN Electrochemistry

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The inhibition of the corrosion of mild steel in 1 M H 2 SO 4 solution by the pharmaceutically active compound esomeprazole (ESP) has been investigated by using weight loss, potentiodynamic polarization, and electrochemical impedance spectroscopy measurements. The effect of temperature on the corrosion behavior with the addition of different concentrations of ESP was studied in the temperature range of 30-60 ∘ C. Results obtained revealed that the inhibition efficiency increased with the increase in concentration of the inhibitor but decreased with the increase in temperature. The addition of KI increased the inhibition of ESP to a considerable extent. The experimental results suggest that the presence of iodide ions in the solution stabilized the adsorption of the ESP molecule on the mild steel surface, thereby improving the inhibition efficiency. Polarization curves indicated that the ESP belonged to a mixed-type inhibitor. Adsorption of the inhibitor on the mild steel surface is found to obey the Langmuir adsorption isotherm. Some thermodynamic functions of dissolution and adsorption processes were also determined. Surface analysis via scanning electron microscope (SEM) and atomic force microscope (AFM) shows a significant improvement in the surface morphology of the mild steel plate.

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Section: Adsorption Isothermmentioning

confidence: 99%

Inhibition of Mild Steel Corrosion in Sulphuric Acid Using Esomeprazole and the Effect of Iodide Ion Addition

Karthik

Sundaravadivelu

2013

ISRN Electrochemistry

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“…However, the slopes of the C inh / θ versus C inh plots were close to 1 and showed a little deviation from unity which meant nonideal simulating (Badawy et al, 2006) and unexpected from Langmuir adsorption isotherm. They might be the results of the interactions between the adsorbed species on the metal surface (Migahed et al, 2003;Azim et al, 1974).…”

Section: Adsorption Isotherm and Thermodynamic Parametersmentioning

confidence: 99%

“…The value 55.5 in the above equation was the molar concentration of water in solution in mol/L (Azim et al, 1974). The relatively high value of the adsorption equilibrium constant (K ads ; Table 4) reflects the high adsorption ability of these surfactants on the metal surface (Abd El-Lateef et al, 2012c).…”

Section: Adsorption Isotherm and Thermodynamic Parametersmentioning

confidence: 99%

Inhibitive Effect of Some Natural Naphthenates as Corrosion Inhibitors on the Corrosive Performance of Carbon Steel in CO2-Saturated Brine

Abbasov¹,

El‐Lateef²,

Mamedxanova³

et al. 2013

IJSRES

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Abstract. Two surfactants [sodium and potassium salts of naphthenic acids] were synthesized by liquid-phase oxidation process of the naphtha fraction of the Baku crude oil and their chemical structure was confirmed by FT-IR spectroscopy. The surface tension at 298K was measured; the critical micelle concentration (CMC) and some surface active parameters were calculated. The inhibition efficiency (η%) of these surfactants has been studied by both Linear polarization resistance corrosion rate and Potentiodynamic polarization measurements at 50 °C. The data showed that, the presence of investigated inhibitors results a high decrease in the corrosion rate. The inhibition efficiency increases with an increase in the inhibitor dose, getting maximum inhibition efficiency 99.48% at 100 ppm of potassium salt. The Tafel polarization results indicate that the inhibitors act as mixed inhibitors. Tafel slopes are approximately constant and independent on the inhibitor concentration. The adsorption of the inhibitors on the carbon steel surface obeys Langmuir's adsorption isotherm. The thermodynamic parameters of adsorption revealed a strong interaction between the inhibitors and the corroding carbon steel surface.

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ChemInform Abstract: MECHANISM OF THE CORROSION INHIBITION OF ZN ANODE IN NAOH BY GELATINE AND SOME INORGANIC ANIONS

Abstract: Die für die Passivierung der Zn‐Anode in KOH bei Abwesenheit oder Gegenwart verschiedener Gelatine‐, Phthalsäure‐, Na,S‐, Na‐silicat‐ und NazCrO4‐Konzentrationen erforderliche Elektrizitätsmenge wurde bestimmt.

Cited by 2 publications

References 1 publication

Inhibition of Mild Steel Corrosion in Sulphuric Acid Using Esomeprazole and the Effect of Iodide Ion Addition

Inhibition of Mild Steel Corrosion in Sulphuric Acid Using Esomeprazole and the Effect of Iodide Ion Addition

Inhibitive Effect of Some Natural Naphthenates as Corrosion Inhibitors on the Corrosive Performance of Carbon Steel in CO2-Saturated Brine

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