Electrochemical measurements used for assessment of corrosion and protection of metallic materials in the field: A critical review

Xia, Da-Hai; Deng, Cheng-Man; Macdonald, Digby D.; Jamali, S.H.; Mills, Douglas J; Luo, Jing‐Li; Strebl, Michael; Amiri, Mehdi; Jin, Wei; Shi, Song; Hu, Wenbin

doi:10.1016/j.jmst.2021.11.004

Cited by 171 publications

(65 citation statements)

References 198 publications

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“…Some of the main practices in coatings evaluation include open-circuit potential (OCP) and electrochemical impedance spectroscopy (EIS). Other common tests can be mentioned such as linear polarization resistance (LPR), electrochemical noise (EN), electrochemical frequency modulation (EFM), potentiostatic step polarization, and galvanostatic step polarization [47]. Nonetheless, the next sections describe the principles, examples, advantages, and limitations of OCP and EIS.…”

Section: Conventional Electrochemical Analysesmentioning

confidence: 99%

“…Finally, although their use and applicability are well-resolved issues in laboratories and industries, some challenges arise when it comes to long-term field evaluation, study of corrosion inhibitors in a reproducible way, prediction of failures before emergence and the replacement of toxic compounds for bio-based alternatives. These challenges were also summarized by a review on electrochemical measurements used for corrosion assessment, where the authors considered the complexity of real systems, pointing to easier, reliable, and non-destructive techniques as the most suitable for in situ analysis [47]. From this perspective, this work provides a concise yet comprehensive compilation of the milestones in the analysis of polymeric coatings, focusing on successful examples of the electrochemical methods used to evaluate smart/self-healing polymeric coatings.…”

Section: Introductionmentioning

confidence: 99%

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Electrochemical Characterization of Polymeric Coatings for Corrosion Protection: A Review of Advances and Perspectives

et al. 2022

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The development of anti-corrosion polymeric coatings has grown exponentially in the fields of material science, chemistry, engineering, and nanotechnology during the last century and has prompted the evolution of efficient characterization techniques. Nowadays, polymeric coatings represent a well-established protection system that provides a barrier between a metallic substrate and the environment. However, the increase in complexity and functionality of these coatings requires high-precision techniques capable of predicting failures and providing smart protection. This review summarizes the state of the art for the main electrochemical techniques, emphasizing devices that track the anti-corrosion properties of polymeric coatings from the macroscale to the nanoscale. An overview of the advances in accelerated corrosion testing and the electrochemical characterization of coatings is explored, including insights into their advantages and limitations. In addition, the challenges and potential applications of the theoretical approaches are summarized based on current knowledge. Finally, this work provides the reader with the trends and challenges of designing future technologies and models capable of tracking corrosion and predicting failures.

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Section: Conventional Electrochemical Analysesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electrochemical Characterization of Polymeric Coatings for Corrosion Protection: A Review of Advances and Perspectives

et al. 2022

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“…It is also difficult to measure these types of corrosion. Corrosion is charge generating which causes natural potential and current transients, that EN measurements can recognize such impulsive transients, called signals 16 , 19 . EN analysis is carried out through two major approaches, including the statistical and spectral techniques.…”

Section: Introductionmentioning

confidence: 99%

A study on synergistic effect of chloride and sulfate ions on copper corrosion by using electrochemical noise in asymmetric cells

Sajadi

Saheb

Shahidi

2022

Sci Rep

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The current study includes a systematic examination of copper corrosion initially in each of NaCl and Na2SO4 solutions separately and then in the mixture solution of Cl− and SO42− ions as aggressive ions. Electrochemical current noise (ECN) signals resulting from asymmetric (Asy) as well as symmetric (Sym) cells have been interpreted using wavelet transform (WT) along with statistical procedures. The signals have been detrended and the decomposition of every signal has been carried out into 8 crystals. Then the standard deviation of every crystal has been illustrated with the standard deviation of partial signal (SDPS) plots. The Asy electrodes increased the pitting detection on copper compared with the Sym ones, indicating higher efficiency of the Asy electrodes. Asymmetric-copper electrodes have been studied using SDPS plots at different temperatures (40, 60, as well as 80 °C). Finally, in order to partly understand the effect of Cl− and SO42− ions on the corrosion of copper, the stabilization of Cu2+ cations by Cl− and SO42− ions in aqueous solutions have been modeled by DFT calculations. The derived results are in accordance with the experimental data.

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“…In fact, the failure of Al in the presence of Hg is a complex process of solid–liquid couples (Keller and Gordon, 2012). Additionally, it is commonly known that the large amount of Cl − (Xia et al , 2021) in seawater is a major factor for severe pitting corrosion of passivated metals (Xia et al , 2022).…”

Section: Introductionmentioning

confidence: 99%

Effect of Hg²⁺ on the corrosion behavior of Al-2%Zn coatings on AA5083 in 3.5 Wt.% NaCl solution

Xia

Zhou²,

Gao

et al. 2022

ACMM

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Purpose This paper aims to study the effect of Hg2+ on the corrosion behavior of Al–2%Zn coatings on AA5083 in 3.5 Wt.% NaCl solution. Design/methodology/approach Potentiodynamic polarization and electrochemical impedance spectroscopy are used to investigate the effect of Hg2+ on the corrosion behavior. The surface and cross-sectional morphology are characterized by scanning electron microscopy and energy dispersive spectroscopy (EDS) to further reveal the corrosion mechanism of Hg2+. Findings The results show that the corrosion behavior of the coating changes significantly as the concentration of Hg2+ increases from 5 to 30 μg/L. The corrosion production film can inhibit the corrosion process when Hg2+ concentration is in the range of 0.5–5 μg/L, while Hg2+ can promote the corrosion process significantly when its concentration reaches to 30 μg/L. The generation rate of dense oxide film on the coating surface is faster than dissolution rate when the concentration of Hg2+ is in the range of 0–5 μg/L, which makes the coating “self-healing” and thus slightly slows down the corrosion rate. The EDS analysis shows that excessive Hg2+ are preferentially deposited at locations with inhomogeneous electrochemical properties, which in turn accelerates corrosion. Originality/value The corrosion resistance of Al-based coatings is significantly affected by Hg2+ in seawater. Thus, it is important to explain the corrosion mechanism of Al–2%Zn coatings under the combined effect of Hg2+ and Cl− in 3.5 Wt.% NaCl solution.

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Electrochemical measurements used for assessment of corrosion and protection of metallic materials in the field: A critical review

Cited by 171 publications

References 198 publications

Electrochemical Characterization of Polymeric Coatings for Corrosion Protection: A Review of Advances and Perspectives

Electrochemical Characterization of Polymeric Coatings for Corrosion Protection: A Review of Advances and Perspectives

A study on synergistic effect of chloride and sulfate ions on copper corrosion by using electrochemical noise in asymmetric cells

Effect of Hg²⁺ on the corrosion behavior of Al-2%Zn coatings on AA5083 in 3.5 Wt.% NaCl solution

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Electrochemical measurements used for assessment of corrosion and protection of metallic materials in the field: A critical review

Cited by 171 publications

References 198 publications

Electrochemical Characterization of Polymeric Coatings for Corrosion Protection: A Review of Advances and Perspectives

Electrochemical Characterization of Polymeric Coatings for Corrosion Protection: A Review of Advances and Perspectives

A study on synergistic effect of chloride and sulfate ions on copper corrosion by using electrochemical noise in asymmetric cells

Effect of Hg2+ on the corrosion behavior of Al-2%Zn coatings on AA5083 in 3.5 Wt.% NaCl solution

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Effect of Hg²⁺ on the corrosion behavior of Al-2%Zn coatings on AA5083 in 3.5 Wt.% NaCl solution