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When gold stops glittering: corrosion mechanisms of René Lalique's Art Nouveau jewellery

2019Journal article Open access
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dc.contributor.authorTissot, Isabel
dc.contributor.authorCorreia, Jorge
dc.contributor.authorMonteiro, Olinda C.
dc.contributor.authorBarreiros, M. Alexandra
dc.contributor.authorGuerra, M. F.
dc.date.accessioned2020-03-18T14:31:44Z
dc.date.available2020-03-18T14:31:44Z
dc.date.issued2019
dc.description.abstractABSTRACT: Art Nouveau jewellery created by René Lalique is presently corroded. To identify the corrosion processes, Au-Ag-Cu alloys with compositions comparable to those used in the René Lalique’s jewellery were fabricated to be exposed to sulphide-containing environments. Using SEM-EDS, XRD, UV-Vis spectroscopy and ellipsometry, it was for the first time demon-strated that at the surface of tarnished Au alloys forms a corrosion film with a layer-by-layer structure. Considering the complex refractive indices of bulk Cu and Ag oxides and sulphides, a two-step corrosion mechanism was proposed. The formation of Cu-based compounds during the early corrosion stages is followed by the formation of Ag-based compounds. The thinness of the formed film, shown for one of the gold alloys to be of 80 nm, is due to a corrosion kinetics controlled by the presence of Au and by the formation of an Au-S self-assembled monolayer. The corrosion mechanism of gold alloys raises a new conservation challenge concerning the removal of nanometric layers.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationTissot, I... [et. al.] - When gold stops glittering: corrosion mechanisms of René Lalique's Art Nouveau jewellery. In: Journal of Analytical Atomic Spectrometry, 2019, Vol. 34, p. 1216-1222pt_PT
dc.identifier.doi10.1039/C9JA00028Cpt_PT
dc.identifier.issn0267-9477
dc.identifier.urihttp://hdl.handle.net/10400.9/3188
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherRoyal Society of Chemistrypt_PT
dc.relationUID/ MULTI/00612/2019pt_PT
dc.relation.publisherversionhttps://doi.org/10.1039/C9JA00028Cpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectCorrosionpt_PT
dc.subjectGoldpt_PT
dc.subjectArt Nouveau jewellerypt_PT
dc.subjectRené Laliquept_PT
dc.titleWhen gold stops glittering: corrosion mechanisms of René Lalique's Art Nouveau jewellerypt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBDE%2F51439%2F2011/PT
oaire.citation.endPage1222pt_PT
oaire.citation.startPage1216pt_PT
oaire.citation.titleJournal of Analytical Atomic Spectrometrypt_PT
oaire.citation.volume34pt_PT
oaire.fundingStreamSFRH
person.familyNameTissot
person.familyNameBarreiros
person.givenNameIsabel
person.givenNameMaria Alexandra
person.identifierL-4674-2014
person.identifier.ciencia-id9E12-B2D3-B90A
person.identifier.ciencia-id271D-7B29-E46C
person.identifier.orcid0000-0002-7550-9878
person.identifier.orcid0000-0002-0132-4969
person.identifier.scopus-author-id55575226000
person.identifier.scopus-author-id6603680496
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationf30e05c7-45e7-494e-9c90-15492a4cf45c
relation.isAuthorOfPublication3b1e7d6a-3232-443e-a747-f442427dc57a
relation.isAuthorOfPublication.latestForDiscovery3b1e7d6a-3232-443e-a747-f442427dc57a
relation.isProjectOfPublication0348af2c-55e4-4a2e-acfd-5ce15c57c807
relation.isProjectOfPublication.latestForDiscovery0348af2c-55e4-4a2e-acfd-5ce15c57c807

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