Hydrodynamic effect on the behaviour of a corrosion inhibitor film: Characterization by electrochemical impedance spectroscopy

Bommersbach, Pascale; Alémany-Dumont, Catherine; Millet, Jean-Pièrre; Normand, Bernard

doi:10.1016/j.electacta.2005.11.020

Cited by 136 publications

(42 citation statements)

References 13 publications

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“…In the general frequency, the polarization resistance consists of charge transfer resistance ( ct ), and another resistance such as diffuse layer resistance, accumulated species at metal/interface solution, and inhibitor film resistance [55]. The CPE indicate a different physical phenomenon such as surface inhomogeneity from surface roughness, inhibitor adsorption, and formation of layer [56,57].…”

Section: Eis Measurementmentioning

confidence: 99%

Bee Wax Propolis Extract as Eco-Friendly Corrosion Inhibitors for 304SS in Sulfuric Acid

Sanjay

Soenoko

Suprapto

et al. 2015

International Journal of Corrosion

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The inhibition properties of bee wax propolis (BWP) extract on the 304SS in 0.5 M sulfuric acid were conducted using potentiodynamic polarization, EIS, and XRD. Quercetin (2-(3.4-dihydroxy phenyl)-3.5.7-trihydroxy-4H-chromen-4-one) was identified as the main compound in the BWP extract based on FTIR and HPLC analysis. The results showed that the inhibitor could retard the corrosion rate of 304SS in 0.5 M sulfuric acid which reached 97.29% and 91.42% at 2000 ppm based on potentiodynamic polarization and EIS measurement, respectively. The inhibition efficiency decreased with increasing temperature. The inhibition mechanism of BWP extract on the 304SS was physisorption and obeyed Temkin adsorption isotherm equation. The thin protective layer on the 304SS surface was confirmed by XRD.

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Section: Eis Measurementmentioning

confidence: 99%

Bee Wax Propolis Extract as Eco-Friendly Corrosion Inhibitors for 304SS in Sulfuric Acid

Sanjay

Soenoko

Suprapto

et al. 2015

International Journal of Corrosion

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“…The circuit employed allows the identification of both solution resistance (R s ) and charge transfer resistance (R t ). The double layer capacitance (C dl ) value is affected by imperfections of the surface which is simulated via a constant phase element (CPE) [31,32]. A constant phase element composed of a component Q dl and a coefficient a is required, and a quantifies different physical phenomena like surface non-homogeneity resulting from surface roughness, inhibitor adsorption, porous layer formation, etc.…”

Section: Eis Studiesmentioning

confidence: 99%

Effect of sodium molybdate on the corrosion behavior of cold rolled steel in peracetic acid solution

Jiang

et al. 2008

J Appl Electrochem

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The effect of sodium molybdate (Na 2 MoO 4 ) on the corrosion of cold rolled steel (CRS) in peracetic acid (PAA) solution was investigated by gravimetric measurements, Tafel polarization curves, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). All the data indicate that Na 2 MoO 4 acts as a very good inhibitor in PAA solution. The inhibition efficiency increases with increasing concentration of Na 2 MoO 4 and immersion time. The inhibition efficiencies, calculated from gravimetric measurements, Tafel polarization curves and electrochemical impedance spectroscopy, are in reasonably good agreement and are very similar in the three cases. Furthermore, polarization data show that Na 2 MoO 4 behaves as an anodic passive type inhibitor. Fourier transform infrared spectroscopy (FTIR) and atomic force microscopy (AFM) were used to characterize the corrosion surface. A probable mechanism is presented to explain the experimental results.

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“…It should be noted that the value of double layer capacity (Cdl) is affected by surface imperfections. Therefore, this effect is simulated via the constant phase element (CPE) [34]. …”

Section: Electrochemical Impedance Spectroscopy Measurementsmentioning

confidence: 99%

The Potential Use of Myrtus Oil as a Corrosion Inhibitor of Brass (Cu70-Zn30) Immersed in 3% NaCl Solution

Tazi¹

2018

Int. J. Green Technol.

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Brass is widely used as turbine material for cooling system for marine propellers. However, it is vulnerable to corrosion by contact of air or aqueous chloride solution. The essential oil of Myrtus communis (MO) was tested as a brass corrosion inhibitor (Cu70-Zn30) immersed in the 3% NaCl solution, using a polarization technique and electrochemical impedance spectroscopy. The effect of MO concentration, temperature and immersion time was studied to evaluate the action of the inhibitor. The results showed that the protection efficiency was enhanced with the increasing of MO concentration, and the potentiodynamic polarization experiment showed that MO acts essentially as a cathodic inhibitor. In addition, experiments have shown that MO inhibition efficiency decreases with increasing immersion time and temperature. The film adsorbed on the brass surface containing MO was confirmed by the results of the Scanning Electron Microscope (SEM) and the Energy Dispersive X-ray (EDX). The overall results affirmed the potential use of MO as inhibitor agent of brass corrosion in the 3% NaCl solution.

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Hydrodynamic effect on the behaviour of a corrosion inhibitor film: Characterization by electrochemical impedance spectroscopy

Cited by 136 publications

References 13 publications

Bee Wax Propolis Extract as Eco-Friendly Corrosion Inhibitors for 304SS in Sulfuric Acid

Bee Wax Propolis Extract as Eco-Friendly Corrosion Inhibitors for 304SS in Sulfuric Acid

Effect of sodium molybdate on the corrosion behavior of cold rolled steel in peracetic acid solution

The Potential Use of Myrtus Oil as a Corrosion Inhibitor of Brass (Cu70-Zn30) Immersed in 3% NaCl Solution

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