Data: Hybrid PEO/sol-gel coatings loaded with Ce for corrosion protection of AA2024-T3

Plasma electrolytic oxidation (PEO) has been targeted as an eco-friendly alternative technology to conventional chromic acid anodizing (CAA) for corrosion protection of aluminium alloys in the aircraft industry. However, conventional PEO technology implies high energy consumption. Flash-PEO coatings...

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Autores: Del Olmo Martínez, Rubén, López Martínez, Esther, Matykina, Endzhe, Tiringer, Ursa, Mol, J.M.C., Mohedano Sánchez, Marta, Arrabal Durán, Raúl
Tipo de recurso: conjunto de datos
Fecha de publicación:2023
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/118658
Acceso en línea:https://hdl.handle.net/20.500.14352/118658
Access Level:acceso abierto
Palabra clave:620
PEO coating
Hybrid sol-gel coating
Green corrosion inhibitor
Active corrosion protection
Cerium
Materiales
3312 Tecnología de Materiales
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repository_id_str
spelling Data: Hybrid PEO/sol-gel coatings loaded with Ce for corrosion protection of AA2024-T3Del Olmo Martínez, RubénLópez Martínez, EstherMatykina, EndzheTiringer, UrsaMol, J.M.C.Mohedano Sánchez, MartaArrabal Durán, Raúl620PEO coatingHybrid sol-gel coatingGreen corrosion inhibitorActive corrosion protectionCeriumMateriales3312 Tecnología de MaterialesPlasma electrolytic oxidation (PEO) has been targeted as an eco-friendly alternative technology to conventional chromic acid anodizing (CAA) for corrosion protection of aluminium alloys in the aircraft industry. However, conventional PEO technology implies high energy consumption. Flash-PEO coatings (≤10 μm) produced in short treatment times (≤ 5 min) constitute a feasible way to overcome this limitation. Nevertheless, the long-term corrosion resistance is compromised, thus requiring novel sealing post-treatments. The present work studies the effect of stand-alone hybrid sol-gel (HSG) and Ce-doped hybrid sol-gel (HSG-Ce) coatings as a sealing post-treatment to evaluate the long-term corrosion resistance of Flash-PEO coatings on aluminium alloy (AA) 2024-T3. The characterization of the PEO, HSG, and HSG-Ce coatings was performed by scanning electron microscopy, X-ray diffraction, water contact angle, dry adhesion tests (ISO 2409), optical profilometry and Fourier transform infrared spectroscopy. The corrosion behaviour was assessed by electrochemical impedance spectroscopy up to 21 days (3.5 wt% NaCl). Active corrosion protection was assessed by immersion tests of artificially scratched coatings. Present findings reveal that low-energy-cost Flash-PEO coatings were successfully formed on AA2024-T3 alloy. Both HSG and HSG-Ce coatings were homogeneously formed on Flash PEO coating. Regarding the corrosion resistance, HSG-Ce showed significant scratch protection during 21 days of immersion in 3.5 wt% NaCl. The results suggest that, while the release of Si and Ce from the coating provided corrosion protection, nitrate release promoted localized corrosion phenomena in the scribe. This was associated with the preferential pitting corrosion phenomena at the Cu-rich intermetallic compounds instead of forming a thick and stablenitrate-rich passive layer.ElsevierUniversidad Complutense de Madrid20232023-05-2020232023-05-20datasethttp://purl.org/coar/resource_type/c_ddb1VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/datasetapplication/ziphttps://hdl.handle.net/20.500.14352/118658reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)InglésengPID2021–124341OB-C22 AEI 10.13039 FEDERNot available S2018 NMTNot available Margarita Salas CT18RYC-2017 21843 Not available Not availableopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-ShareAlike 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-sa/4.0/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/1186582026-06-02T12:44:21Z
dc.title.none.fl_str_mv Data: Hybrid PEO/sol-gel coatings loaded with Ce for corrosion protection of AA2024-T3
title Data: Hybrid PEO/sol-gel coatings loaded with Ce for corrosion protection of AA2024-T3
spellingShingle Data: Hybrid PEO/sol-gel coatings loaded with Ce for corrosion protection of AA2024-T3
Del Olmo Martínez, Rubén
620
PEO coating
Hybrid sol-gel coating
Green corrosion inhibitor
Active corrosion protection
Cerium
Materiales
3312 Tecnología de Materiales
title_short Data: Hybrid PEO/sol-gel coatings loaded with Ce for corrosion protection of AA2024-T3
title_full Data: Hybrid PEO/sol-gel coatings loaded with Ce for corrosion protection of AA2024-T3
title_fullStr Data: Hybrid PEO/sol-gel coatings loaded with Ce for corrosion protection of AA2024-T3
title_full_unstemmed Data: Hybrid PEO/sol-gel coatings loaded with Ce for corrosion protection of AA2024-T3
title_sort Data: Hybrid PEO/sol-gel coatings loaded with Ce for corrosion protection of AA2024-T3
dc.creator.none.fl_str_mv Del Olmo Martínez, Rubén
López Martínez, Esther
Matykina, Endzhe
Tiringer, Ursa
Mol, J.M.C.
Mohedano Sánchez, Marta
Arrabal Durán, Raúl
author Del Olmo Martínez, Rubén
author_facet Del Olmo Martínez, Rubén
López Martínez, Esther
Matykina, Endzhe
Tiringer, Ursa
Mol, J.M.C.
Mohedano Sánchez, Marta
Arrabal Durán, Raúl
author_role author
author2 López Martínez, Esther
Matykina, Endzhe
Tiringer, Ursa
Mol, J.M.C.
Mohedano Sánchez, Marta
Arrabal Durán, Raúl
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 620
PEO coating
Hybrid sol-gel coating
Green corrosion inhibitor
Active corrosion protection
Cerium
Materiales
3312 Tecnología de Materiales
topic 620
PEO coating
Hybrid sol-gel coating
Green corrosion inhibitor
Active corrosion protection
Cerium
Materiales
3312 Tecnología de Materiales
description Plasma electrolytic oxidation (PEO) has been targeted as an eco-friendly alternative technology to conventional chromic acid anodizing (CAA) for corrosion protection of aluminium alloys in the aircraft industry. However, conventional PEO technology implies high energy consumption. Flash-PEO coatings (≤10 μm) produced in short treatment times (≤ 5 min) constitute a feasible way to overcome this limitation. Nevertheless, the long-term corrosion resistance is compromised, thus requiring novel sealing post-treatments. The present work studies the effect of stand-alone hybrid sol-gel (HSG) and Ce-doped hybrid sol-gel (HSG-Ce) coatings as a sealing post-treatment to evaluate the long-term corrosion resistance of Flash-PEO coatings on aluminium alloy (AA) 2024-T3. The characterization of the PEO, HSG, and HSG-Ce coatings was performed by scanning electron microscopy, X-ray diffraction, water contact angle, dry adhesion tests (ISO 2409), optical profilometry and Fourier transform infrared spectroscopy. The corrosion behaviour was assessed by electrochemical impedance spectroscopy up to 21 days (3.5 wt% NaCl). Active corrosion protection was assessed by immersion tests of artificially scratched coatings. Present findings reveal that low-energy-cost Flash-PEO coatings were successfully formed on AA2024-T3 alloy. Both HSG and HSG-Ce coatings were homogeneously formed on Flash PEO coating. Regarding the corrosion resistance, HSG-Ce showed significant scratch protection during 21 days of immersion in 3.5 wt% NaCl. The results suggest that, while the release of Si and Ce from the coating provided corrosion protection, nitrate release promoted localized corrosion phenomena in the scribe. This was associated with the preferential pitting corrosion phenomena at the Cu-rich intermetallic compounds instead of forming a thick and stablenitrate-rich passive layer.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023-05-20
2023
2023-05-20
dc.type.none.fl_str_mv dataset
http://purl.org/coar/resource_type/c_ddb1
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/dataset
format dataset
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/118658
url https://hdl.handle.net/20.500.14352/118658
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv PID2021–124341OB-C22 AEI 10.13039 FEDER
Not available S2018 NMT
Not available Margarita Salas CT18
RYC-2017 21843 Not available Not available
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-ShareAlike 4.0 International
http://creativecommons.org/licenses/by-nc-sa/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-ShareAlike 4.0 International
http://creativecommons.org/licenses/by-nc-sa/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/zip
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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