Abstract
The electrochemical behaviour of 1024 mild steel electrodes is investigated in the presence of 0.05–0.5 M sodium bicarbonate in aqueous solution at pH 8.9 and 25°C. Voltammograms are obtained with a rotating gold ring-mild steel electrode and the effect of the NaHCO3 concentration, the potential limits and the rotation speed of the disc electrode is considered. The voltammograms display an oxidation peak current at low potentials, a passivity region and a transpassive region at high potentials for the potential sweep in the anodic direction. The oxidation current in the passivity region is practically independent of the applied potential and the NaHCO3 concentration. The rate-determining step of the oxidation reaction in both the oxidation peak current region and the transpassive region is determined.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
R. Gilbert, Institut de recherche d'Hydro-Québec, Internal Report IREQ-4150B (1988); G. Larochelle, L. Brossard and P. Courchesne. Internal Report uIREQ-4529} (1989).
C. M. Rangel, R. A. Leitao and I. T. Fonseca, Electrochim. Acta, 34 (1989) 255.
Idem, ibid. 31, (1986) 1659.
E. B. Castro, J. R. Vilche and A. J. Arvia, Corros. Sci. 32 (1991) 37.
E. B. Castro, C. R. Valentini, C. A. Moina, J. R. Vilche and A. J. Arvia, ibid. 26 (1986) 781.
P. Southworth, A. Hamnett, A. M. Riley and J. M. Sykes, ibid. 28 (1988) 1139.
J. G. N. Thomas, T. J. Nurse and R. Walker, Br. Corros. J. 5 (1970) 87.
C. R. Valentini, C. A. Moina, J. R. Vilche and A. J. Arvia Corros. Sci. 25 (1985) 985.
J. Gui and T. M. Devine, ibid. 37 (1995) 1177.
D. H. Davies and G. T. Burstein, Corrosion 36 (1980) 417.
R. D. Armstrong and A. C. Coates, Electroanal. Chem. and Interf. Electrochem. 50 (1974) 303.
J. M. Blengino, M. Keddam, J. P. Labbe and L. Robbiola, Corros. Sci. 37 (1995) 621.
W. J. Albery and M. L. Hitchman, `Ring-disc Electrodes' Clarendon Press, Oxford (1971).
M. E. Brett, K. M. Parkin and M. J. Graham, J. Electrochem. Soc. (1986) 2032.
E. Deltombe and M. Pourbaix, in `Comportement électrochimique du fer en solution carbonique, diagrammes d'équilibre tension-pH du système Fe-CO2-H2O, à 25 °C'. Rapport technique 8. CEBELCOR (1954).
B. R. MacDougall and M. J. Graham, in `Corrosion Mechanisms in Theory and Practice' (edited by P. Marcus and J. Oudar), Marcel Dekker, New York (1995).
M. L. Hoppe, E. O. Schlemper and R. K. Murmann, Acta Cryst. B38 (1982) 2237.
K. Bouzek and I. Rousar, Electrochim. Acta 38 (1993) 1717.
M. Nagayama and M. Cohen, J. Electrochem. Soc. (1962) 781.
Idem, ibid. (1963) 670.
J. A. Bardwell, B. R. MacDougall and M. J. Graham, ibid. (1988) 413.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
SIMARD , S., DROGOWSKA , M., ME´NARD , H. et al. Electrochemical behaviour of 1024 mild steel in slightly alkaline bicarbonate solutions. Journal of Applied Electrochemistry 27, 317–324 (1997). https://doi.org/10.1023/A:1018484814627
Issue Date:
DOI: https://doi.org/10.1023/A:1018484814627