Corrosion of aluminium in acidic and neutral solutions

Lenderink, H.J.W.; Linden, Marte van der; Wit, J.H.W. de

doi:10.1016/0013-4686(93)80329-x

Cited by 221 publications

(96 citation statements)

References 6 publications

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“…Amongst these, some studies have been undertaken in weakly acid solution in order to throw light on the effect of pH on the rate of the corrosion process [1][2][3][4][5][6], its inhibition by the addition of organic compounds [7,8], the influence of metal ions [9][10][11] and on the structure of the oxide layer and its semiconductor properties [2]. Electrochemical techniques employed have been mainly open circuit potential (OCP) measurements, polarisation curves and electrochemical impedance.…”

Section: Introductionmentioning

confidence: 99%

“…Polarisation curves [2] and polarisation curves and impedance [3] were used to examine the corrosion behaviour in acetic acid/acetate solutions with a view to controlling the pH near the aluminium surface and gain insight into the corrosion mechanism. The study described in [4] used X-ray photoelectron spectroscopy (XPS) to investigate the influence of pH on the thickness and ion content of the aluminium oxide film in sodium chloride solution.…”

Section: Introductionmentioning

confidence: 99%

“…[3,37,38]. The technique is widely used and because of the similarities of impedance magnitude Bode plots with EN spectral noise plots, EIS can assume an important role in the analysis and comprehension of data from EN.…”

Section: Introductionmentioning

confidence: 99%

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Electrochemical noise and impedance study of aluminium in weakly acid chloride solution

Gouveia‐Caridade

Pereira

Brett

2004

Electrochimica Acta

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The electrochemical noise (EN) characteristics of pure aluminium in unbuffered potassium chloride solution and with acetic acid/sodium acetate buffer at pH 5.4 and 4.3 have been analysed to throw light on the influence of pH and of the presence of buffer at the aluminium surface on chloride ion-induced corrosion. Comparison has been made with results obtained by electrochemical impedance spectroscopy (EIS) and quantitative deductions made concerning the values of the noise resistance and the magnitude of the electrochemical impedance. Deviations between results obtained by the two experimental techniques are discussed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Electrochemical noise and impedance study of aluminium in weakly acid chloride solution

Gouveia‐Caridade

Pereira

Brett

2004

Electrochimica Acta

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“…Furthermore, the second capacitive loop, at lower frequencies, was related to the oxide film. The inductive time constant has been related to the relaxation of bulk species in the oxide film and the capacitive time constant in the region of lower frequency to the oxide layer dissolution 26 . Ibris 21 ascribed the inductive loop to the adsorption of [TiF 6 ] n-species on the Ti surface.…”

Section: Eis Studiesmentioning

confidence: 99%

Electrochemical behavior of Ti and Ti6Al4V in aqueous solutions of citric acid containing halides

Schmidt

Azambuja

2006

Mat. Res.

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This paper reports on an investigation of the electrochemical behavior of Ti grade 2 and Ti6Al4V alloy in aqueous citric acid solutions with pH 2.0 containing halide ions. Voltammetric studies of Ti and the alloy in citric acid, with and without chloride ions, indicate that the Ti and Ti alloy presented a passive behavior in the test solutions used. Pitting was observed at 3.0 and 2.5 V/SCE for Ti and Ti6Al4V, respectively, when bromide ions were added to the solution. In solutions containing fluoride ions, dissolution of the film occurred at potentials close to -1.0 V/SCE in both electrodes. The iodide ions oxidized on the passive oxide film at potentials close to 1.0 V/SCE. EIS results of the materials in citric acid solutions containing chloride ions revealed that the film's resistance increased as the applied potential rose from 0 to 1.0 V. In bromide-containing solutions, breakdown of the film was confirmed at potentials above 2.0 V/SCE in both electrodes. These results suggest film reformation for Ti and the alloy in solutions containing fluoride at potentials within the passive region.

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“…and H + ads. on the electrode surface [22]. The equivalent circuit used to fit the experimental data and extract the impedance parameters (R ct and C dl ) which characterize the corrosion process is present elsewhere [14].…”

Section: Impedance Measurementsmentioning

confidence: 99%