Effect of trace dissolved oxygen on the cathodic kinetics of carbon dioxide corrosion of carbon steel

D John; S Bailey; B Kinsella; Roland De Marco

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Conference paper

Effect of trace dissolved oxygen on the cathodic kinetics of carbon dioxide corrosion of carbon steel

D John, S Bailey, B Kinsella and Roland De Marco

Proceedings of the 48th Annual Conference of the Australasian Corrosion Association, pp.347-351

Corrosion & Prevention: Annual Conference of the Australasian Corrosion Association, 48th (Wellington, New Zealand, 16-Nov-2008–19-Nov-2008)

Curran Associates Inc.

2008

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Abstract

carbon dioxide corrosion

dissolved oxygen

mass transfer

cathodic polarisation curves

jet impingement

limiting current

carbon steel

brine

The corrosion of carbon steel in carbon dioxide saturated brine solutions is controlled by a mixed activation-mass transfer process in the cathodic reaction mechanism. Cathodic polarisation curves of carbon steel in carbonic acid solutions exhibit a limiting current behaviour that is dependent on the rate of mass transfer. In studies using the jet impingement technique, the magnitude of this limiting current behaviour has been found to be strongly affected by the presence of trace levels of dissolved oxygen. This paper presents a theoretical assessment of the mass transfer limited cathodic current to illustrate the pronounced effect of dissolved oxygen contamination <15 ppb. Discussion is presented regarding the implications of dissolved oxygen contamination on the interpretation of the mechanism of carbon dioxide corrosion.

Details

Title: Effect of trace dissolved oxygen on the cathodic kinetics of carbon dioxide corrosion of carbon steel
Authors: D John (Author) - Western Australian Corrosion Research Group
S Bailey (Author) - Western Australian Corrosion Research Group
B Kinsella (Author) - Curtin University of Technology
Roland De Marco (Author) - Curtin University of Technology
Publication details: Proceedings of the 48th Annual Conference of the Australasian Corrosion Association, pp.347-351
Conference details: Corrosion & Prevention: Annual Conference of the Australasian Corrosion Association, 48th (Wellington, New Zealand, 16-Nov-2008–19-Nov-2008)
Publisher: Curran Associates Inc.
Date published: 2008
ISBN: 9781622762446
Organisation Unit: University of the Sunshine Coast, Queensland; Office of the Deputy Vice-Chancellor (Research and Innovation)
Language: English
Record Identifier: 99448869502621
Output Type: Conference paper

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