Characterization of corrosion inhibition performance of azole compounds through power spectral density of electrochemical noise

Markhali, B.P.; Naderi, Reza; Mahdavian, M.

doi:10.1016/j.jelechem.2013.12.024

Cited by 23 publications

(13 citation statements)

References 30 publications

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“…where p could be any integer number ranging from 1 to K. Therefore the DC trend in the noise data can be removed and the real component of noise data, V i,noise , can be calculated as (4) It is important to note that the record analysis is strongly affected by p values. Equation 5was used to calculate the appropriate p value for the MAR method, where Δt is the data sampling interval [28][29][30]: 5Eqn 5, emerging from a wavelet analysis, is based on the fact that various electrochemical events have different lifetimes. Therefore, the measured signal could be over-filtered and misinterpreted in the case of too low p values.…”

Section: Detrending Methodsmentioning

confidence: 99%

Investigation on Trend Removal in Time Domain Analysis of Electrochemical Noise Data Using Polynomial Fitting and Moving Average Removal Methods

Havashinejadian¹,

Danaee²,

Ebrahimi³

et al. 2017

J. Electrochem. Sci. Technol

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Electrochemical noise signals in many cases exhibit a DC drift that should be removed prior to further data analysis. Polynomial fitting and moving average removal method have been used to remove trends of electrochemical noise (EN) in time domain. The corrosion inhibition of synthesized schiff base N,N′-bis(3,5-dihydroxyacetophenone)-2,2-dimethylpropandiimine on API-5L-X70 steel in hydrochloric acid solutions were used to study the effects of drifts removal methods on noise resistance calculation. Also, electrochemical impedance spectroscopy (EIS) was used to study the corrosion inhibition property of the inhibitor. The results showed that for the calculation of R n , both methods were effective in trend removal and the polynomial with m=4 and MAR with p=40 were in agreement.

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Section: Detrending Methodsmentioning

confidence: 99%

Investigation on Trend Removal in Time Domain Analysis of Electrochemical Noise Data Using Polynomial Fitting and Moving Average Removal Methods

Havashinejadian¹,

Danaee²,

Ebrahimi³

et al. 2017

J. Electrochem. Sci. Technol

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“…It has been demonstrated that the noise resistance was in a good accordance with polarization resistance which can be measured by means of other electrochemical approaches like EIS and polarization. Actually, noise resistance is a particular type of polarization resistance, which is called statistical polarization resistance [11,12].…”

Section: Introductionmentioning

confidence: 99%

Application of Quantum Chemical, Noise and the Electrochemical Frequency Modulation to Investigate the Adsorption and Corrosion Inhibition Behavior of 2-Amino-6-Hydroxybenzothiazole for Steel Api X80 in Acidic Solution

Danaee

Nikparsa

2020

J. Chil. Chem. Soc.

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Different theoretical, electrochemical and surface techniques were applied to study the corrosion inhibition effects of 2-Amino-6-hydroxybenzothiazole in 5% HCl solution. The density functional theory was carried out and quantum chemical factors like the energy gap, energy of highest occupied molecular orbital, the energy of lowest unoccupied molecular orbital, the fraction of electron transferred, and Mulliken charges have been calculated. In addition, according to quantum calculation, S atom in 2-Amino-6-hydroxybenzothiazole indicated more tendency for electrophilic attack in adsorption. The main reason for high inhibition efficiencies in very low concentrations is the planar and simplicity of inhibitor structure which leads to increasing the efficiency of adsorption by functional group especially sulfur. Electrochemical frequency modulation and potentiodynamic polarization indicated that this material has excellent inhibiting features in very low concentrations. The influence of DC trend on the explanation of electrochemical noise data was evaluated by polynomial fitting and the optimum polynomial order m=4 was obtained. Noise resistance and the inhibition efficiency was calculated and compared in different methods. The theory of shot noise in frequency domain was used to obtain the electrochemical event charge. The corroded surface of steel in the absence and existence of thiazole compound was studied by Atomic force microscopy.

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“…Organic inhibitors are compounds that applied in very small concentrations are capable of effectively reduce the corrosion rate. Among these compounds those belonging to the group of azoles, which contain nitrogen and/or sulphur, are considered to be effective corrosion inhibitors for copper in a wide range of aggressive environments …”

Section: Introductionmentioning

confidence: 99%

“…Among these compounds those belonging to the group of azoles, which contain nitrogen and/or sulphur, are considered to be effective corrosion inhibitors for copper in a wide range of aggressive environments. [3][4][5][6][7][8][9][10][11][12] Inhibitor selection is often based on the gravimetric determination of metal dissolution rate (i.e. mass loss).…”

Section: Introductionmentioning

confidence: 99%

Investigating metal‐inhibitor interaction with EQCM and SVET: 3‐amino‐1,2,4‐triazole on Au, Cu and Au–Cu galvanic coupling

Tur

Véleva

Fernández-Pérez

2017

Materials & Corrosion

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This study reports a multiscale electrochemical investigation of the interaction between the organic compound 3-amino-1,2,4-triazole (ATA), regarded as corrosion inhibitor, and two noble metals (Cu and Au), either separated or under galvanical coupling. Open circuit potential measurements show that Cu is not protected by the application of ATA, having its potential shifted towards more negative values, while on Au exhibits a slight inhibitive effect. The adsorption free energies were determined using the electrochemical quartz crystal microbalance (EQCM), with values that correspond to physisorption on either metal. The surface reactivity of the inhibitor-modified metals in chloride-containing aqueous solution was studied using the scanning vibrating electrode technique (SVET), showing high spontaneous activity, associated to electron transfer reactions in systems containing Cu and 3-amino-1,2,4-triazole. K E Y W O R D Scopper, electrochemical quartz crystal microbalance, gold, metal-inhibitor electrochemistry, scanning vibrating electrode technique

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Characterization of corrosion inhibition performance of azole compounds through power spectral density of electrochemical noise

Cited by 23 publications

References 30 publications

Investigation on Trend Removal in Time Domain Analysis of Electrochemical Noise Data Using Polynomial Fitting and Moving Average Removal Methods

Investigation on Trend Removal in Time Domain Analysis of Electrochemical Noise Data Using Polynomial Fitting and Moving Average Removal Methods

Application of Quantum Chemical, Noise and the Electrochemical Frequency Modulation to Investigate the Adsorption and Corrosion Inhibition Behavior of 2-Amino-6-Hydroxybenzothiazole for Steel Api X80 in Acidic Solution

Investigating metal‐inhibitor interaction with EQCM and SVET: 3‐amino‐1,2,4‐triazole on Au, Cu and Au–Cu galvanic coupling

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