The role of surface inhomogeneities in corrosion processes-electrochemical impedance spectroscopy (EIS) on different aluminium oxide films

Jüttner, K.; Lorenz, W.J.; Paatsch, W.

doi:10.1016/0010-938x(89)90036-x

Cited by 74 publications

(27 citation statements)

References 18 publications

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“…Complete AC-impedance measurements on anodised aluminium films were performed by Hitzig and Jüttner [10][11][12]. They investigated properties of sealed porous aluminium oxide layers and their corrosion behaviour especially under natural environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical impedance spectroscopic study of barrier layer thinning in nanostructured aluminium

et al. 2007

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The electrochemical behaviour of electropolished and anodised aluminium was studied by electrochemical impedance spectroscopy (EIS). Freshly electropolished aluminium behaves as a pure capacitor exhibiting Warburg impedance at low frequencies. Storage of the electropolished aluminium, even in an air-tight bottle, results in the reconstruction of a uniform compact barrier layer. The impedance response of a stored electropolished aluminium as well as anodised aluminium after oxide removal, done by chemical etching, exhibits only a capacitive loop in the complex plane. The effect of the oxide layer thickness on the impedance data was investigated for layers formed during anodising at a cell potential of 15 or 23 V. Impedance measurements carried out over a wide range of frequencies gave useful information on the efficiency of the thinning of the barrier layer at the bottom of porous aluminium oxide layers. The rate of thinning of the barrier layer was estimated for samples anodised at different voltage.

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Section: Introductionmentioning

confidence: 99%

Electrochemical impedance spectroscopic study of barrier layer thinning in nanostructured aluminium

et al. 2007

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“…This model consists of a parallel coupling of the impedance of the pits and the impedance of the unattacked surface surrounding the pits [13,19]. In this equivalent circuit, the impedance of the pits is represented by a parallel combination of a faradic impedance and a double layer capacitance [15,16,19], or a CPE (constant phase element [20].…”

Section: Introductionmentioning

confidence: 99%

Passivity and Pitting Susceptibility of type 304 Stainless Steel in Acidic Sulphate Solutions

El-Egamy

Badawy

Shehata

2001

Mat.-wiss. u. Werkstofftech.

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“…The first layer, close to the metal, corresponds to a more compact material, such as an Al 2 O 3 barrier, and is responsible for the highest potential drop. The second layer, close to the solution, corresponds to a more porous and less resistant compound, such as a porous hydrated oxide like Al(OH) 3 or AlOOH (bohemite) [22][23][24].…”

Section: Resultsmentioning

confidence: 99%

Electrochemical behavior of aluminum in 1-n-butyl-3-methylimidazolium tetrafluoroborate ionic liquid electrolytes for capacitor applications

Trombetta

Souza

et al. 2009

J Appl Electrochem

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This study compares two series of solvents for application in aluminum electrolytic capacitors: ethylene glycol (EG) and water mixtures, and ethylene glycol and 1-n-butyl-3-methylimidazolium tetrafluoroborate (BMI.BF 4 ) ionic liquid (IL) mixtures. Electrochemical impedance spectroscopy and cyclic voltammetry were carried out with a previously anodized aluminum disk electrode. Comparative measurements of solution resistance, polarization resistance, AC capacitance, and passive current were made. The results show that EG-IL mixtures with low amounts of IL (10% IL-90% EG v/v) have a low solution resistance. Low values of solution resistance, high values of polarization resistance, small passive current, and uniform capacitance of anodized aluminum in EG-IL mixtures are favorable properties of the BMI.BF 4 IL for use as an electrolyte in the construction of electrolytic aluminum capacitors.

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The role of surface inhomogeneities in corrosion processes-electrochemical impedance spectroscopy (EIS) on different aluminium oxide films

Cited by 74 publications

References 18 publications

Electrochemical impedance spectroscopic study of barrier layer thinning in nanostructured aluminium

Electrochemical impedance spectroscopic study of barrier layer thinning in nanostructured aluminium

Passivity and Pitting Susceptibility of type 304 Stainless Steel in Acidic Sulphate Solutions

Electrochemical behavior of aluminum in 1-n-butyl-3-methylimidazolium tetrafluoroborate ionic liquid electrolytes for capacitor applications

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