Effect of Cathodic Polarisation Switch-Off on the Passivity and Stability to Crevice Corrosion of AISI 304L Stainless Steel

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 ra...

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Autores principales: Shubina Helbert, Varvara, Nazarov, Andrei, Vucko, Flavien, Larché, Nicolas, Thierry, Dominique
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8198074/
https://www.ncbi.nlm.nih.gov/pubmed/34071568
http://dx.doi.org/10.3390/ma14112921
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author Shubina Helbert, Varvara
Nazarov, Andrei
Vucko, Flavien
Larché, Nicolas
Thierry, Dominique
author_facet Shubina Helbert, Varvara
Nazarov, Andrei
Vucko, Flavien
Larché, Nicolas
Thierry, Dominique
author_sort Shubina Helbert, Varvara
collection PubMed
description 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.
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spelling pubmed-81980742021-06-14 Effect of Cathodic Polarisation Switch-Off on the Passivity and Stability to Crevice Corrosion of AISI 304L Stainless Steel Shubina Helbert, Varvara Nazarov, Andrei Vucko, Flavien Larché, Nicolas Thierry, Dominique Materials (Basel) Article 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. MDPI 2021-05-28 /pmc/articles/PMC8198074/ /pubmed/34071568 http://dx.doi.org/10.3390/ma14112921 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Shubina Helbert, Varvara
Nazarov, Andrei
Vucko, Flavien
Larché, Nicolas
Thierry, Dominique
Effect of Cathodic Polarisation Switch-Off on the Passivity and Stability to Crevice Corrosion of AISI 304L Stainless Steel
title Effect of Cathodic Polarisation Switch-Off on the Passivity and Stability to Crevice Corrosion of AISI 304L Stainless Steel
title_full Effect of Cathodic Polarisation Switch-Off on the Passivity and Stability to Crevice Corrosion of AISI 304L Stainless Steel
title_fullStr Effect of Cathodic Polarisation Switch-Off on the Passivity and Stability to Crevice Corrosion of AISI 304L Stainless Steel
title_full_unstemmed Effect of Cathodic Polarisation Switch-Off on the Passivity and Stability to Crevice Corrosion of AISI 304L Stainless Steel
title_short Effect of Cathodic Polarisation Switch-Off on the Passivity and Stability to Crevice Corrosion of AISI 304L Stainless Steel
title_sort effect of cathodic polarisation switch-off on the passivity and stability to crevice corrosion of aisi 304l stainless steel
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8198074/
https://www.ncbi.nlm.nih.gov/pubmed/34071568
http://dx.doi.org/10.3390/ma14112921
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