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Kinetics of corrosion reactions on press hardened steel in atmospheric conditions under thin electrolyte films
RISE Research Institutes of Sweden, Materials and Production, Corrosion.ORCID iD: 0000-0002-5872-8649
RISE Research Institutes of Sweden, Materials and Production, Corrosion.
Universidade de Lisboa, Portugal.
RISE Research Institutes of Sweden, Materials and Production, Corrosion.ORCID iD: 0000-0002-6847-5446
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2023 (English)In: Electrochimica Acta, ISSN 0013-4686, E-ISSN 1873-3859, Vol. 458, article id 142500Article in journal (Refereed) Published
Abstract [en]

Steels with high mechanical performance are prone to hydrogen embrittlement and environmental assisted cracking. Under atmospheric corrosion conditions, the source of hydrogen can be the steel corrosion process itself or galvanic coupling with a metallic coating. Electrochemical behaviour of Press Hardened Steel (PHS) under electrolyte films of different thicknesses using local electrochemical techniques was studied on a fundamental level. Scanning Vibrated Electrode Technique (SVET) was applied to study the evolution and localization of the corrosion process during PHS immersion in NaCl electrolyte. Kelvin Probe (KP) was used as a reference electrode to obtain cathodic and anodic polarization curves on PHS surfaces which were covered by thin electrolyte films (60 to 500 µm) of 0.1 M NaOH and 0.6 M NaCl. For both electrolytes, a strong increase in the oxygen reduction rate due to the decreasing of electrolyte thickness has been clearly demonstrated. Data are correlated well with a theoretical plot determined by Nernst-Fick equation. The influence of the rust layers on the kinetics of corrosion reactions under thin electrolyte films was investigated using KP. © 2023

Place, publisher, year, edition, pages
Elsevier Ltd , 2023. Vol. 458, article id 142500
Keywords [en]
Atmospheric corrosion, Electrodes, Electrolytic reduction, Galvanic corrosion, Hardening, Presses (machine tools), Sodium chloride, Sodium hydroxide, Steel corrosion, Atmospheric conditions, Condition, Corrosion process, Corrosion reaction, Environmental assisted crackings, Galvanic coupling, Hardened steel, Kelvin probe, Mechanical performance, Thin electrolyte films, Electrolytes
National Category
Corrosion Engineering
Identifiers
URN: urn:nbn:se:ri:diva-64842DOI: 10.1016/j.electacta.2023.142500Scopus ID: 2-s2.0-85156229324OAI: oai:DiVA.org:ri-64842DiVA, id: diva2:1756955
Note

Funding details: Fundação para a Ciência e a Tecnologia, FCT, CQE - UIDB/00100/2020, LA/P/0056/2020, UIDP/00100/2020; Funding details: ArcelorMittal; Funding details: Research Fund for Coal and Steel, RFCS, 101034041; Funding text 1: This research work has been implemented within the framework of the European project AtHyCor “Modelling of hydrogen activity from atmospheric corrosion in ultra-high strength steels for light structure application”. This project has received funding from the Research Fund for Coal and Steel under grant agreement No 101034041 . Authors from CQE acknowledge FCT funding under the project CQE - UIDB/00100/2020, UIDP/00100/2020, - LA/P/0056/2020.; Funding text 2: This research work has been implemented within the framework of the European project AtHyCor “Modelling of hydrogen activity from atmospheric corrosion in ultra-high strength steels for light structure application”. This project has received funding from the Research Fund for Coal and Steel under grant agreement No 101034041. Authors from CQE acknowledge FCT funding under the project CQE - UIDB/00100/2020, UIDP/00100/2020, - LA/P/0056/2020.;

Available from: 2023-05-15 Created: 2023-05-15 Last updated: 2024-02-06Bibliographically approved

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Helbert, VarvaraVucko, FlavienThierry, Dominique

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