Journal article 18380 views 145 downloads
Influence of uniaxial deformation on surface morphology and corrosion performance of chromium-based coatings for packaging steel
,
Hamilton McMurray
Corrosion Science, Volume: 190, Start page: 109662
Swansea University Authors:
JORDAN WHITESIDE, Elizabeth Sackett , Hamilton McMurray
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DOI (Published version): 10.1016/j.corsci.2021.109662
Abstract
Chromium-based coatings on steel, cathodically electroplated from Cr(VI) and Cr(III) electrolytes, were studied to compare their corrosion resistance following application of uniaxial strain. An organic overcoat (PVB) was applied to strained samples and an in-situ scanning Kelvin probe technique was...
| Published in: | Corrosion Science |
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| ISSN: | 0010-938X |
| Published: |
Elsevier BV
2021
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa57282 |
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| Abstract: |
Chromium-based coatings on steel, cathodically electroplated from Cr(VI) and Cr(III) electrolytes, were studied to compare their corrosion resistance following application of uniaxial strain. An organic overcoat (PVB) was applied to strained samples and an in-situ scanning Kelvin probe technique was used to determine rates of PVB cathodic disbondment. The Cr(VI) derived coatings were fully resistant to cathodic disbondment post-deformation. The Cr(III) derived coatings exhibited increased rates of cathodic disbondment with increasing uniaxial strain. The Kinetics of cathodic disbondment are explained on the basis of coating morphology produced by deformation, and the exposure of underlying iron. The electrochemical availability of iron is estimated by measuring hydrogen evolution kinetics on cathodically polarised samples. |
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| Keywords: |
steel, Chromium, Cathodic disbondment, Oxygen reduction, Packaging Steels, Uniaxial Deformation |
| College: |
Faculty of Science and Engineering |
| Funders: |
The authors would like to thank TATA Steel, and the M2A & COATED2 CDT financial support from the European Social Fund via the Welsh Government (<GN3>c80816<GN3>) and the Engineering and Physical Sciences Research Council (Grant Ref: EP/L015099/1). The work was further supported by the Advanced Imaging of Materials (AIM) Facility at Swansea University. |
| Start Page: |
109662 |