Electrochemical study of UNS S32550 super duplex stainless steel corrosion in turbulent seawater using the rotating cylinder electrode
Electrochemical study of UNS S32550 super duplex stainless steel corrosion in turbulent seawater using the rotating cylinder electrode
The cathodic and anodic characteristics of freshly polished and pre-reduced UNS S32550 (ASTM A479) super duplex stainless steel in a filtered and conductivity-adjusted seawater have been investigated under controlled flow conditions. A rotating cylinder electrode was used together with both steady and non-steady-state voltammetry and a potential step current transient technique to investigate the electrode reactions in the fully characterized electrolyte. Both oxygen reduction and hydrogen evolution were highly irreversible and the material exhibited excellent passivation and repassivation kinetics. Relative corrosion rates were derived and the corrosion mechanism of the alloy was found to be completely independent of the mass-transfer effects, which can contribute to flow-induced corrosion.
duplex stainless steel, flow-induced corrosion, mass transfer, oxygen reduction, polarization, rotating cylinderelectrode, transpassivity
561-572
Kear, G.
eb25b3ff-b75c-47ba-b545-233fee85b0a3
Barker, B.D.
74e8d2f7-7cd3-418c-8190-ebf2197b51b9
Walsh, F.C.
309528e7-062e-439b-af40-9309bc91efb2
2004
Kear, G.
eb25b3ff-b75c-47ba-b545-233fee85b0a3
Barker, B.D.
74e8d2f7-7cd3-418c-8190-ebf2197b51b9
Walsh, F.C.
309528e7-062e-439b-af40-9309bc91efb2
Kear, G., Barker, B.D. and Walsh, F.C.
(2004)
Electrochemical study of UNS S32550 super duplex stainless steel corrosion in turbulent seawater using the rotating cylinder electrode.
National Association of Corrosion Engineers International: Corrosion Journal, 60 (6), .
Abstract
The cathodic and anodic characteristics of freshly polished and pre-reduced UNS S32550 (ASTM A479) super duplex stainless steel in a filtered and conductivity-adjusted seawater have been investigated under controlled flow conditions. A rotating cylinder electrode was used together with both steady and non-steady-state voltammetry and a potential step current transient technique to investigate the electrode reactions in the fully characterized electrolyte. Both oxygen reduction and hydrogen evolution were highly irreversible and the material exhibited excellent passivation and repassivation kinetics. Relative corrosion rates were derived and the corrosion mechanism of the alloy was found to be completely independent of the mass-transfer effects, which can contribute to flow-induced corrosion.
This record has no associated files available for download.
More information
Published date: 2004
Keywords:
duplex stainless steel, flow-induced corrosion, mass transfer, oxygen reduction, polarization, rotating cylinderelectrode, transpassivity
Organisations:
Engineering Sciences
Identifiers
Local EPrints ID: 23124
URI: http://eprints.soton.ac.uk/id/eprint/23124
ISSN: 0010-9312
PURE UUID: 18993715-42ce-4a50-b3d8-622993efdf32
Catalogue record
Date deposited: 24 Mar 2006
Last modified: 08 Jan 2022 06:48
Export record
Contributors
Author:
G. Kear
Author:
B.D. Barker
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics