Development of a model for experimental data treatment of diffusion and activation limited polarization curves for magnesium and steel alloys
Development of a model for experimental data treatment of diffusion and activation limited polarization curves for magnesium and steel alloys
Potentiodynamic polarization curves are often performed to characterize the bulk corrosion properties of a material in terms of its corrosion potential, rate, and Tafel kinetics in a given environment. This requires approaching them as one of two extreme cases, with purely activation or diffusion controlling the measured currents. For the intermediate behavior displayed by many real samples, making this assumption is a significant source of error. In this work, a finite element model has been developed which considers both of these contributions simultaneously for experimental data with a broad material scope. This has been used to examine both extremely corrosion vulnerable samples in two magnesium alloys and extremely corrosion resistant samples in two steels. The effectiveness of several goodness of fit statistics in comparing the similarity between experimental and simulated data has also been assessed.
E3576-E3582
Stephens, L.I.
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Perry, S.C.
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Gateman, S.M.
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Lacasse, R.
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Schulz, R.
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Mauzeroll, J.
af84f034-1e52-4419-a1c2-ce7116db5b07
14 July 2017
Stephens, L.I.
d6218c34-25bd-4312-b2bd-f115d2af1d50
Perry, S.C.
8e204d86-4a9c-4a5d-9932-cf470174648e
Gateman, S.M.
55ceb3a2-dd5d-48c2-b3a2-6ac8e86f2790
Lacasse, R.
634a206f-22a0-4513-b91f-42273124122b
Schulz, R.
9994d09d-f82d-4464-a28c-10031b8d785c
Mauzeroll, J.
af84f034-1e52-4419-a1c2-ce7116db5b07
Stephens, L.I., Perry, S.C., Gateman, S.M., Lacasse, R., Schulz, R. and Mauzeroll, J.
(2017)
Development of a model for experimental data treatment of diffusion and activation limited polarization curves for magnesium and steel alloys.
Journal of the Electrochemical Society, 164 (11), .
(doi:10.1149/2.0591711jes).
Abstract
Potentiodynamic polarization curves are often performed to characterize the bulk corrosion properties of a material in terms of its corrosion potential, rate, and Tafel kinetics in a given environment. This requires approaching them as one of two extreme cases, with purely activation or diffusion controlling the measured currents. For the intermediate behavior displayed by many real samples, making this assumption is a significant source of error. In this work, a finite element model has been developed which considers both of these contributions simultaneously for experimental data with a broad material scope. This has been used to examine both extremely corrosion vulnerable samples in two magnesium alloys and extremely corrosion resistant samples in two steels. The effectiveness of several goodness of fit statistics in comparing the similarity between experimental and simulated data has also been assessed.
Text
Stephens_2017_J._Electrochem._Soc._164_E3576
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Submitted date: 30 March 2017
Published date: 14 July 2017
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Local EPrints ID: 491774
URI: http://eprints.soton.ac.uk/id/eprint/491774
ISSN: 0013-4651
PURE UUID: a67c68e7-7778-4e44-9a38-717cd9f74f2e
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Date deposited: 03 Jul 2024 17:27
Last modified: 12 Jul 2024 02:01
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Author:
L.I. Stephens
Author:
S.C. Perry
Author:
S.M. Gateman
Author:
R. Lacasse
Author:
R. Schulz
Author:
J. Mauzeroll
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