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Stress-Affected Oxygen Reduction Reaction Rates on UNS S13800 Stainless Steel
This work investigates the previously unexplored impact of tensile stress on oxygen reduction reaction (ORR) kinetics of a precipitation-hardened, stainless-steel fastener material, UNS S13800. ORR is known to drive localized and galvanic corrosion in aircraft assemblies and greater understanding of...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8934858/ https://www.ncbi.nlm.nih.gov/pubmed/35321477 http://dx.doi.org/10.3389/fchem.2022.820379 |
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author | Hangarter, Carlos M. Anderson, Rachel M. Policastro, Steven A. |
author_facet | Hangarter, Carlos M. Anderson, Rachel M. Policastro, Steven A. |
author_sort | Hangarter, Carlos M. |
collection | PubMed |
description | This work investigates the previously unexplored impact of tensile stress on oxygen reduction reaction (ORR) kinetics of a precipitation-hardened, stainless-steel fastener material, UNS S13800. ORR is known to drive localized and galvanic corrosion in aircraft assemblies and greater understanding of this reaction on structural alloys is important in forecasting component lifetime and service requirements. The mechano-electrochemical behavior of UNSS13800 was examined using amperometry to measure the reduction current response to tensile stress. Mechanical load cycles within the elastic regime demonstrated reversible electrochemical current shifts under chloride electrolyte droplets that exhibited a clear potential dependence. Strain ramping produced current peaks with a strain rate dependence, which was distinct from the chronoamperometric shifts during static tensile load conditions. Finally, mechanistic insight into the dynamic and static responses was obtained by deoxygenation, which demonstrated ORR contributions that were distinct from other reductive processes. |
format | Online Article Text |
id | pubmed-8934858 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-89348582022-03-22 Stress-Affected Oxygen Reduction Reaction Rates on UNS S13800 Stainless Steel Hangarter, Carlos M. Anderson, Rachel M. Policastro, Steven A. Front Chem Chemistry This work investigates the previously unexplored impact of tensile stress on oxygen reduction reaction (ORR) kinetics of a precipitation-hardened, stainless-steel fastener material, UNS S13800. ORR is known to drive localized and galvanic corrosion in aircraft assemblies and greater understanding of this reaction on structural alloys is important in forecasting component lifetime and service requirements. The mechano-electrochemical behavior of UNSS13800 was examined using amperometry to measure the reduction current response to tensile stress. Mechanical load cycles within the elastic regime demonstrated reversible electrochemical current shifts under chloride electrolyte droplets that exhibited a clear potential dependence. Strain ramping produced current peaks with a strain rate dependence, which was distinct from the chronoamperometric shifts during static tensile load conditions. Finally, mechanistic insight into the dynamic and static responses was obtained by deoxygenation, which demonstrated ORR contributions that were distinct from other reductive processes. Frontiers Media S.A. 2022-03-07 /pmc/articles/PMC8934858/ /pubmed/35321477 http://dx.doi.org/10.3389/fchem.2022.820379 Text en Copyright © 2022 Hangarter, Anderson and Policastro. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Chemistry Hangarter, Carlos M. Anderson, Rachel M. Policastro, Steven A. Stress-Affected Oxygen Reduction Reaction Rates on UNS S13800 Stainless Steel |
title | Stress-Affected Oxygen Reduction Reaction Rates on UNS S13800 Stainless Steel |
title_full | Stress-Affected Oxygen Reduction Reaction Rates on UNS S13800 Stainless Steel |
title_fullStr | Stress-Affected Oxygen Reduction Reaction Rates on UNS S13800 Stainless Steel |
title_full_unstemmed | Stress-Affected Oxygen Reduction Reaction Rates on UNS S13800 Stainless Steel |
title_short | Stress-Affected Oxygen Reduction Reaction Rates on UNS S13800 Stainless Steel |
title_sort | stress-affected oxygen reduction reaction rates on uns s13800 stainless steel |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8934858/ https://www.ncbi.nlm.nih.gov/pubmed/35321477 http://dx.doi.org/10.3389/fchem.2022.820379 |
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