Enhanced corrosion resistance of 2024 aluminum alloys with Cr<sub>2</sub>O<sub>3</sub> thin layers by Atomic Layer Deposition

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dc.contributor.authorMercier, Dimitrics
dc.contributor.authorZazpe Mendioroz, Raúlcs
dc.contributor.authorWang, Xiaozhencs
dc.contributor.authorMichaux, Maria Celinacs
dc.contributor.authorRodriguez Pereira, Jhonatancs
dc.contributor.authorZanna, Sandrinecs
dc.contributor.authorSeyeux, Antoinecs
dc.contributor.authorMacák, Jancs
dc.contributor.authorMarcus, Philippecs
dc.coverage.issueNovembercs
dc.coverage.volume256cs
dc.date.accessioned2025-10-30T22:06:28Z
dc.date.available2025-10-30T22:06:28Z
dc.date.issued2025-11-01cs
dc.description.abstractThis research explores the use of chromium oxide (Cr2O3) thin layers grown by Atomic Layer Deposition (ALD) as protective coating to enhance the corrosion resistance of 2024 aluminum alloys. In order to obtain sufficiently dense and uniform Cr2O3 layers, the ALD process was tailored in terms of alloy surface pretreatment before the main Cr2O3 ALD process. The corrosion resistance of both Cr2O3 coated and non-coated aluminum alloys was evaluated in a corrosive 0.1 M KOH environment using in situ optical microscopy and ex situ surface analysis techniques, including X-ray Photoelectron Spectroscopy (XPS) and Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS) and a neutral environment containing chlorides. Findings revealed that the Cr2O3-coated samples exhibited significantly reduced reactivity, highlighting the excellent corrosion protection provided by the Cr2O3 thin films. Although surface analysis revealed the presence of submicron defects within the Cr2O3 layer, which could act as corrosion initiation sites, the occurrence of these defects was mitigated with increasing Cr2O3 layer thickness. Additionally, after the corrosion test, an enrichment of copper and aluminum oxides at the layer surface was observed, suggesting preferential attack at intermetallic phases in corrosive environment.en
dc.description.abstractThis research explores the use of chromium oxide (Cr2O3) thin layers grown by Atomic Layer Deposition (ALD) as protective coating to enhance the corrosion resistance of 2024 aluminum alloys. In order to obtain sufficiently dense and uniform Cr2O3 layers, the ALD process was tailored in terms of alloy surface pretreatment before the main Cr2O3 ALD process. The corrosion resistance of both Cr2O3 coated and non-coated aluminum alloys was evaluated in a corrosive 0.1 M KOH environment using in situ optical microscopy and ex situ surface analysis techniques, including X-ray Photoelectron Spectroscopy (XPS) and Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS) and a neutral environment containing chlorides. Findings revealed that the Cr2O3-coated samples exhibited significantly reduced reactivity, highlighting the excellent corrosion protection provided by the Cr2O3 thin films. Although surface analysis revealed the presence of submicron defects within the Cr2O3 layer, which could act as corrosion initiation sites, the occurrence of these defects was mitigated with increasing Cr2O3 layer thickness. Additionally, after the corrosion test, an enrichment of copper and aluminum oxides at the layer surface was observed, suggesting preferential attack at intermetallic phases in corrosive environment.en
dc.formattextcs
dc.format.extent1-10cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationCorrosion science. 2025, vol. 256, issue November, p. 1-10.en
dc.identifier.doi10.1016/j.corsci.2025.113167cs
dc.identifier.issn0010-938Xcs
dc.identifier.orcid0000-0001-7091-3022cs
dc.identifier.other198672cs
dc.identifier.scopus55655855500cs
dc.identifier.urihttps://hdl.handle.net/11012/255613
dc.language.isoencs
dc.relation.ispartofCorrosion sciencecs
dc.relation.urihttps://www.sciencedirect.com/science/article/pii/S0010938X25004949cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/0010-938X/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectAtomic Layer Depositionen
dc.subjectCr2O3 thin filmen
dc.subject2024 Al alloyen
dc.subjectTime-of-flight secondary ions massen
dc.subjectspectroscopyen
dc.subjectCorrosion resistanceen
dc.subjectAtomic Layer Deposition
dc.subjectCr2O3 thin film
dc.subject2024 Al alloy
dc.subjectTime-of-flight secondary ions mass
dc.subjectspectroscopy
dc.subjectCorrosion resistance
dc.titleEnhanced corrosion resistance of 2024 aluminum alloys with Cr<sub>2</sub>O<sub>3</sub> thin layers by Atomic Layer Depositionen
dc.title.alternativeEnhanced corrosion resistance of 2024 aluminum alloys with Cr<sub>2</sub>O<sub>3</sub> thin layers by Atomic Layer Depositionen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-198672en
sync.item.dbtypeVAVen
sync.item.insts2025.10.30 23:06:28en
sync.item.modts2025.10.30 11:33:16en
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Pokročilé nízkodimenzionální nanomateriálycs
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