Analysis of electrochemical noise (ECN) data in time and frequency domain for comparison corrosion inhibition of some azole compounds on Cu in 1.0M H2SO4 solution

Ramezanzadeh, Bahram; Arman, S.Y.; Mehdipour, Mehrad; Markhali, B.P.

doi:10.1016/j.apsusc.2013.10.119

Cited by 102 publications

(35 citation statements)

References 51 publications

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“…The main feature of MAR method is a d-trending by subtracting a local average from the noise data. Any data point in the series, V i , is a combination of the real noise component and the DC trend component: where p is an integer value that can be 3,10,16,32,64 [15]. The DC trend in the voltage-time record can therefore be removed and the random fluctuation V i,noise could be deduced as:…”

Section: 2 Electrochemical Noise (En) Resultsmentioning

confidence: 99%

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Using Electrochemical Noise Technique to Evaluate the Corrosion Performance of a Reinforcement Magnesium Alloy

Gobara¹

2014

ILCPA

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AZ91D magnesium alloy was reinforced by titanium and boron carbides under an inert environment using in-situ reactive infiltration technique. The corrosion properties of the reinforced magnesium alloy were investigated using Electrochemical noise (EN) techniques in dilute Harrison solutions. The moving average removal (MAR) method was used as trend removal methods. The frequency of pitting events (ƒ n ) and the average charge in each pitting events (q) were calculated for each EN measurements. EN results shows that the addition of reinforcement improved the corrosion resistance of the magnesium alloy (R-Mg) and no signs of corrosion were observed during 10 days of immersion in the corrosive solution.

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Section: 2 Electrochemical Noise (En) Resultsmentioning

confidence: 99%

“…Based on the frequency domain analysis of the electrochemical potential and current signals, Ψ E and Ψ I respectively, can be determined by calculating the mean PSD values of potential and current noise around at low frequency typically 0.01 Hz [15,17]. …”

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confidence: 99%

Using Electrochemical Noise Technique to Evaluate the Corrosion Performance of a Reinforcement Magnesium Alloy

Gobara¹

2014

ILCPA

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“…The current noise vs time was measured between the electrode and electrolyte system with respect to open circuit potential. The inhibition efficiency was calculated from charge transfer resistance (R ct ), corrosion current (i corr ) and noise resistance (R n ) and expressed as IE EIS , IE Pol and IE ENA , respectively [17,18].…”

Section: Electrochemical Studiesmentioning

confidence: 99%

Corrosion inhibition effect of novel methyl benzimidazolium ionic liquid for carbon steel in HCl medium

Kannan

Karthikeyan

Murugan

et al. 2016

Journal of Molecular Liquids

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“…It is considered that initially 2-MBT molecule is adsorbed in the metal surface through the exo-sulfur atom (Oshawa and Süetaka, 1979;Subramaninan and Lakshminarayanan, 2002;Kazansky et al, 2012;Ramenzanzadeh et al, 2014) this fact is possible because 2-MBT molecules exhibit the thiolthione tautomerism (Oshawa and Süetaka, 1979;Ramenzanzadeh et al, 2014), in the range of pH of 3 to 9 (Jing et al, 2013), which leads to an anionic form of 2-MBT (Winkler et al, 2014) (Fig. 8).…”

Section: Frequency Response Over Timementioning

confidence: 99%

Direct measurement of the adsorption kinetics of 2-Mercaptobenzothiazole on a microcrystalline copper surface

Tur¹,

Véleva²

2016

REVMETAL

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ABSTRACT:The adsorption on copper of 2-Mercaptobenzothiazole (2-MBT), a heterocyclic compound member of the tiazole family, has been investigated at different concentrations (1×10 −1 to 1×10 −6 M) in water, employing the Electrochemical Quartz Crystal Microbalance (EQCM). The frequency response over time was obtained for each concentration, showing a defined exponential behavior at higher concentrations (1×10 RESUMEN: Medición directa de la cinética de adsorción del 2-Mercaptobenzotiazol en una superficie micro cristalina de cobre.En el presente trabajo se ha investigado la adsorción del 2-Mercaptobenzotiazol (2-MBT) en cobre, un compuesto heterocíclico miembro de la familia de los tiazoles, en solución acuosa a diferentes concentraciones (1×10 −1 a 1×10 −6 M), empleando la Balanza Electroquímica de Cristal de Cuarzo (BECC). Se midió y analizó el cambio de frecuencia con respecto al tiempo para cada concentración, mostrando un comportamiento exponencial definido en el rango de concentraciones altas (1×10 −1 , 1×10 −2 y 1×10 −3 M), los cambios de frecuencia registrados se ajustaron usando la isoterma de adsorción de Langmuir obteniendo buenos coeficientes de correlación (R 2 =0,91 a 0,98). Se calculó también la fracción de superficie recubierta y se halló que se encuentra en el orden de 0,50 a 0,01 para las concentraciones altas de 2-MBT. La energía libre de adsorción calculada fue de ΔG ads =−5,59 kJ mol −1 , lo cual corresponde a un proceso de fisisorción.

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Analysis of electrochemical noise (ECN) data in time and frequency domain for comparison corrosion inhibition of some azole compounds on Cu in 1.0M H2SO4 solution

Cited by 102 publications

References 51 publications

Using Electrochemical Noise Technique to Evaluate the Corrosion Performance of a Reinforcement Magnesium Alloy

Using Electrochemical Noise Technique to Evaluate the Corrosion Performance of a Reinforcement Magnesium Alloy

Corrosion inhibition effect of novel methyl benzimidazolium ionic liquid for carbon steel in HCl medium

Direct measurement of the adsorption kinetics of 2-Mercaptobenzothiazole on a microcrystalline copper surface

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