A Review of Electrochemical Techniques for Corrosion Monitoring – Fundamentals and Research Updates

Sheetal,; Kundu, Sheetal; Thakur, Sanjeeve; Singh, Ashish Kumar; Singh, Manjeet; Pani, Balaram; Saji, Viswanathan S.

doi:10.1080/10408347.2023.2267671

Cited by 8 publications

(3 citation statements)

References 149 publications

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“…Computer controlled Gamry instrument Potentiostat/Galvanostat/ZRA (REF 600, model Gamry, Warminster, PA, USA), and software (Gamry’s EIS300 program and DC105) was used for performing all electrochemical measurements. A three-electrode electrochemical cell consisting of a working electrode (MSL) with an active surface area of 1 cm 2 , a counter (Pt wire), and a reference electrode (SCE), was prepared according to the standard process for electrochemical experiments . In each run, collection of electrochemical data points began after reaching a steady state potential (OCP) of approximately 30 min.…”

Section: Methodsmentioning

confidence: 99%

“…A three-electrode electrochemical cell consisting of a working electrode (MSL) with an active surface area of 1 cm 2 , a counter (Pt wire), and a reference electrode (SCE), was prepared according to the standard process for electrochemical experiments. 39 In each run, collection of electrochemical data points began after reaching a steady state potential (OCP) of approximately 30 min. At a scan rate of 0.1 mV s –1 , the potentiodynamic polarization (PDP) curves were initiated from −0.6 to 0 V (vs SCE) over the corrosion potential (Ec orr .).…”

Section: Methodsmentioning

confidence: 99%

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Cysteine as an Eco-Friendly Anticorrosion Inhibitor for Mild Steel in Various Acidic Solutions: Electrochemical, Adsorption, Surface Analysis, and Quantum Chemical Calculations

Elabbasy,

Toghan,

Gadow

2024

ACS Omega

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The corrosion of iron in acidic environments has a negative impact on global industry. Herewith, the inhibitory effect of cysteine (Cys.) on mild steel (MSL) corrosion in different acidic solutions (1 M HCl, 1 M H 2 SO 4 , and 1 M H 3 PO 4 ) was investigated through weight loss, potentiodynamic polarization (PDP), electrochemical impedance spectroscopy, scanning electron microscopy (SEM), and theoretical calculations. The measurement results indicated that the adsorption of Cys. molecules on the metal surface caused corrosion inhibition. As a result, a protective layer or insoluble compound, or both, is obtained, blocking the active sites, preventing corrosion. The effectiveness (IE %) of the Cys. was enhanced by increasing concentration and lowering temperature. The maximum IE % of inhibition at 1 × 10 −2 M of Cys. obtained are 97.3, 89.7, and 84.4% in HCl, H 3 PO 4 , and H 2 SO 4 solutions, respectively. At the same inhibitor concentration, the double-layer capacity decreased, and the charge-transfer resistance increased from 17.17 to 188.5, 3.564 to 31.91, and 1.325 to 8.715 Ω cm 2 in HCl, H 3 PO 4 , and H 2 SO 4 solutions, respectively. Adsorption and PDP studies confirmed that it obeys the Langmuir adsorption isotherm and acts as a mixed-type inhibitor of physicochemical nature. The corresponding thermodynamic and kinetic parameters were also calculated and discussed. Moreover, the inhibitory effect on the surface was inspected by SEM. The findings demonstrated that the order of IE % using Cys as anticorrosion agent for MSL is HCl > H 3 PO 4 > H 2 SO 4 solutions.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Cysteine as an Eco-Friendly Anticorrosion Inhibitor for Mild Steel in Various Acidic Solutions: Electrochemical, Adsorption, Surface Analysis, and Quantum Chemical Calculations

Elabbasy,

Toghan,

Gadow

2024

ACS Omega

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“…Numerous factors influence the inhibition process, with the metal surface charge and the state of organic molecules in a corrosive environment being particularly influential in the adsorption process. [95][96][97][98][99] Previous research [100][101][102][103] has demonstrated that mild steel surfaces in HCl solution carry a net positive charge, leading to preferential adsorption of chloride ions on the surface. As a result, excess electrons are generated, facilitating the adsorption of cationic species.…”

Section: Inhibition Mechanismmentioning

confidence: 99%

Exploring corrosion protection for mild steel in HCl solution: An experimental and theoretical analysis of an antipyrine derivative as an anticorrosion agent

Aljibori,

Alamiery,

Gaaz

et al. 2024

Carbon Neutralization

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The corrosion of mild steel in HCl solution remains a critical issue in various industrial applications. In the quest for effective corrosion inhibitors, 4‐(2‐Hydroxy‐3‐Methoxybenzylideneamino) antipyrine (HMBA) has emerged as a promising candidate. This study investigates the inhibitory properties of HMBA on mild steel corrosion in HCl solution through weight loss measurements, electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization (PDP) techniques. The experiments spanned over various time periods, including 1, 5, 10, 24, and 48 h. The results reveal that HMBA exhibits exceptional inhibition efficiency (IE), with an impressive 94.7% inhibition rate. This outstanding performance underscores its potential as a corrosion inhibitor for mild steel in aggressive HCl environments. To elucidate the adsorption behavior of HMBA on the mild steel surface, Langmuir isotherm modeling was employed, demonstrating a strong correlation between the experimental data and the Langmuir adsorption isotherm model. Furthermore, the study employs density functional theory (DFT) to gain insight into the mechanism of HMBA inhibition. DFT calculations suggest that both physisorption and chemisorption mechanisms are involved in the interaction between HMBA and the mild steel surface. The calculated Gibbs free energy of adsorption () is found to be approximately , indicating a spontaneous and energetically favorable adsorption process. In conclusion, HMBA emerges as a highly effective corrosion inhibitor for mild steel in HCl solution, offering impressive IE over various time intervals. The combination of experimental techniques, such as WL, EIS, and PDP, along with computational insights from DFT calculations, provides an understanding of the inhibitory properties of HMBA. These findings hold great promise for the development of environmentally friendly corrosion inhibitors in industrial applications.

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Corrosion area detection and depth prediction using machine learning

Son,

Jeong,

2024

International Journal of Naval Architecture and Ocean Engineeri

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A Review of Electrochemical Techniques for Corrosion Monitoring – Fundamentals and Research Updates

Cited by 8 publications

References 149 publications

Cysteine as an Eco-Friendly Anticorrosion Inhibitor for Mild Steel in Various Acidic Solutions: Electrochemical, Adsorption, Surface Analysis, and Quantum Chemical Calculations

Cysteine as an Eco-Friendly Anticorrosion Inhibitor for Mild Steel in Various Acidic Solutions: Electrochemical, Adsorption, Surface Analysis, and Quantum Chemical Calculations

Exploring corrosion protection for mild steel in HCl solution: An experimental and theoretical analysis of an antipyrine derivative as an anticorrosion agent

Corrosion area detection and depth prediction using machine learning

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