2003
DOI: 10.1016/j.jelechem.2003.07.013
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Pitting corrosion of zinc in alkaline medium by thiocyanate ions

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Cited by 36 publications
(20 citation statements)
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“…These results demonstrate that the oxide film is stable at and near E corr . On a passivated electrode, it is possible that Al dissolution takes place mainly via chemical dissolution of the protective passive oxide film stimulated by, as will be seen, the aggressive attack of SCN − anions [6]. The passive current density (j pass ) obviously increases with the applied potential, see the insert of Fig.…”
Section: Methodsmentioning
confidence: 88%
See 1 more Smart Citation
“…These results demonstrate that the oxide film is stable at and near E corr . On a passivated electrode, it is possible that Al dissolution takes place mainly via chemical dissolution of the protective passive oxide film stimulated by, as will be seen, the aggressive attack of SCN − anions [6]. The passive current density (j pass ) obviously increases with the applied potential, see the insert of Fig.…”
Section: Methodsmentioning
confidence: 88%
“…For these reasons, and in continuation of our program, the objective of the present work is to investigate the aggressiveness of SCN − towards passivity breakdown of Al, Al-6%Zn and Al-12%Zn alloys. Previous studies [5,6] were also made in this laboratory concerning passivity breakdown of Zn in alkaline solutions by SCN − anion. Measurements in the present work were performed under the influence of various experimental conditions using potentiodynamic anodic polarization, cyclic voltammetry, potentiostatic and impedance techniques.…”
Section: Introductionmentioning
confidence: 99%
“…For these reasons, the corrosion behaviour of zinc has attracted the attention of several investigators in a wide variety of media [5][6][7][8][9][10][11][12][13][14][15]. Zinc suffers pitting corrosion when exposed to aggressive anions such as halide ions [16][17][18][19], ClO 4 showed that SCN − ions [24] and NO 3 − ions [25] caused severe pitting corrosion to Zn.…”
Section: Introductionmentioning
confidence: 99%
“…The incubation time (t i ) indicates the beginning of the pit nucleation period, where its magnitude reflects the susceptibility of the oxide film to breakdown [14][15][16]32]. It is clear that both the incubation time and the pit growth current density, j pit , (the rising part of the transient) depend on the values of E s,a .…”
Section: Current/time Transient Measurementsmentioning
confidence: 99%
“…A programme is in progress in our laboratory to study the pitting corrosion behaviour of some metals and alloys in various aqueous solutions [13][14][15][16][17][18][19][20]. Recently, in our previous study [21], the influence of halide ions on the pitting corrosion behaviour of Al and some of its alloys has been investigated in Na 2 SO 4 solutions under the influence of various experimental variables by means of potentiodynamic polarization and chronoamperometry measurements.…”
Section: Introductionmentioning
confidence: 99%