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Effect of cathodic polarisation switch-off on the passivity and stability to crevice corrosion of aisi 304l stainless steel
RISE Research Institutes of Sweden, Materials and Production, Corrosion. (Institut de la Corrosion)ORCID iD: 0000-0002-5872-8649
RISE Research Institutes of Sweden, Materials and Production, Corrosion. (Institut de la Corrision)
RISE Research Institutes of Sweden, Materials and Production, Corrosion. (Institut de la Corrision)
RISE Research Institutes of Sweden, Materials and Production, Corrosion. (Institut de la Corrosion)ORCID iD: 0000-0001-8721-8560
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2021 (English)In: Materials, E-ISSN 1996-1944, Vol. 14, no 11, article id 2921Article in journal (Refereed) Published
Abstract [en]

The effects of cathodic polarisation switch-off on the passivation of AISI 304L stainless steel in air and its crevice corrosion susceptibility in 3.5 wt.% NaCl aqueous electrolyte were investigated. Scanning Kelvin probe (SKP) data showed that the oxide film is significantly destabilised and the rate of steel passivation in air is slowed down. Thermal desorption analysis (TDA) highlighted that hydrogen absorption is proportional to the applied cathodic current density. A special crevice corrosion set-up was designed to realise simultaneous reproducible monitoring of potential and galvanic current to study the impact of prior cathodic polarisation on crevice corrosion onset. © 2021 by the authors.

Place, publisher, year, edition, pages
MDPI AG , 2021. Vol. 14, no 11, article id 2921
Keywords [en]
Cathodic polarisation, Crevice corrosion, Electrochemical measurements, Hydrogen, Passivation, SKP, Stainless steel, TDA, Electrolytes, Galvanic corrosion, Oxide films, Polarization, Sodium chloride, Steel corrosion, AISI 304L stainless steel, Aqueous electrolyte, Cathodic current density, Crevice corrosion susceptibility, Hydrogen absorption, Scanning Kelvin probes, Steel passivation, Thermal desorption analysis, Austenitic stainless steel
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Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:ri:diva-54684DOI: 10.3390/ma14112921Scopus ID: 2-s2.0-85107364149OAI: oai:DiVA.org:ri-54684DiVA, id: diva2:1574484
Available from: 2021-06-28 Created: 2021-06-28 Last updated: 2024-07-04Bibliographically approved

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Helbert, VarvaraLarché, NicolasThierry, Dominique

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