Electrochemical impedance spectroscopy as a tool for investigating underpaint corrosion

Bonora, P.L.; Deflorian, F.; Fedrizzi, L.

doi:10.1016/0013-4686(95)00440-8

Cited by 436 publications

(211 citation statements)

References 28 publications

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“…We can also underline, on Bode diagram, relative to phase angle evolutions, a phenomenon at high frequencies (%10 3 Hz), associated with both capacitance and resistance of alumino-silane hybrid coating [5,[32][33][34][35][36]. The high angle values, closed to 908, suggest an efficient barrier effect whatever the cerium concentration of the coatings.…”

Section: Morphological Characterization Of the Filmmentioning

confidence: 78%

Effect of cerium on structure modifications of a hybrid sol–gel coating, its mechanical properties and anti-corrosion behavior

Cambon

Esteban

Ansart

et al. 2012

Materials Research Bulletin

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Section: Morphological Characterization Of the Filmmentioning

confidence: 78%

Effect of cerium on structure modifications of a hybrid sol–gel coating, its mechanical properties and anti-corrosion behavior

Cambon

Esteban

Ansart

et al. 2012

Materials Research Bulletin

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“…In literature, many papers are available about the use of EIS to investigate underpaint corrosion (Sekine, 1997;Bonora et al, 1995) and to detect the degree of coating delamination (McIntyre and Pham, 1996).…”

Section: Other Eis Applicationsmentioning

confidence: 99%

Electrical impedance spectroscopy (EIS) for biological analysis and food characterization: a review

Grossi

Riccò

2017

J. Sens. Sens. Syst.

296

160

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Abstract. Electrical impedance spectroscopy (EIS), in which a sinusoidal test voltage or current is applied to the sample under test to measure its impedance over a suitable frequency range, is a powerful technique to investigate the electrical properties of a large variety of materials. In practice, the measured impedance spectra, usually fitted with an equivalent electrical model, represent an electrical fingerprint of the sample providing an insight into its properties and behavior. EIS is used in a broad range of applications as a quick and easily automated technique to characterize solid, liquid, semiliquid, organic as well as inorganic materials. This paper presents an updated review of EIS main implementations and applications.

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“…Electrochemical impedance spectroscopy is a popular technique for the assessment of the corrosion protection performance of organic coatings, which has been used for some decades [1][2][3][4][5]. By following the evolution of the impedance response of a substrate/coating/electrolyte system over an extended period of time, many research groups have been able to monitor the degradation of the coating material and the onset of corrosion processes.…”

Section: Introductionmentioning

confidence: 99%

Constant-phase-element behavior caused by inhomogeneous water uptake in anti-corrosion coatings

Amand

Musiani

Orazem

et al. 2013

Electrochimica Acta

136

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The impedance of a substrate/coating/electrolyte system was calculated with the assumptions: (i) the coating uptakes electrolyte to an extent that progressively decreases from the coating/electrolyte interface to the substrate/coating interface where it becomes negligible; (ii) the volume fraction of the electrolyte varies along the coating thickness according to a power-law; (iii) the resistivity and permittivity profiles of the electrolyte-penetrated coating can be calculated through an effective medium theory (EMT) formula corresponding to a parallel combination of the two media (electrolyte and coating material); and (iv) some pores extend from the coating/electrolyte interface to the substrate/coating interface, providing a low resistance path. The impedance plots thus calculated exhibited a constant phase element (CPE) behavior in a large frequency range. Some experimental results obtained with 2024 aluminum alloy/hybrid sol-gel coating samples immersed in a NaCl solution were analyzed with reference to the above described model.The extension of the recently-developed power-law CPE model to anti-corrosion coatings is shown to yield insight into the distribution of resistivity and associated water uptake. Evaluation of mixing rules for conductivities and permittivities of the two media (coating and electrolyte) showed that the linear combination provided results that were consistent with the observed impedance response; whereas, distributions resulting from a series combination of the two media, an EMT formula proposed in the literature, and the Maxwell approximation were incompatible with the observed CPE impedance response.

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Electrochemical impedance spectroscopy as a tool for investigating underpaint corrosion

Cited by 436 publications

References 28 publications

Effect of cerium on structure modifications of a hybrid sol–gel coating, its mechanical properties and anti-corrosion behavior

Effect of cerium on structure modifications of a hybrid sol–gel coating, its mechanical properties and anti-corrosion behavior

Electrical impedance spectroscopy (EIS) for biological analysis and food characterization: a review

Constant-phase-element behavior caused by inhomogeneous water uptake in anti-corrosion coatings

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