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Characterisation of Archaeological High-tin Bronze Corrosion Structures

2022-05-19Artigo científico Acesso aberto
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dc.contributor.authorSaraiva, Ana S.
dc.contributor.authorFigueiredo, Elin
dc.contributor.authorÁguas, Hugo
dc.contributor.authorSilva, Rui J. C.
dc.contributor.institutionDCR - Departamento de Conservação e Restauro
dc.contributor.institutionDCM - Departamento de Ciência dos Materiais
dc.contributor.institutionCENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N)
dc.contributor.pblEarthscan
dc.date.accessioned2021-03-29T22:24:22Z
dc.date.available2022-03-05T01:31:12Z
dc.date.issued2022-05-19
dc.descriptionPart of this work was carried out in the framework of the projects: 'Singing Bronze', funded by Banco Santander through the prize Santander/NOVA 2016; 'IberianTin' (PTDC/HAR-ARQ/32290/2017), funded by European Regional Development Fund funds through the regional program of Lisbon and through national funds through the Fundacao para a Ciencia e a Tecnologia (FCT) (Foundation for Science and Technology); UID/CTM/50025/2019 granted to CENIMAT/i3N, financed through FEDER funds by COMPETE 2020 and national funds through FCT.
dc.description.abstractSince ancient times, the use of high-tin bronze alloys (>17 wt.%) has been mainly limited to the production of specific objects such as mirrors and bells. High-tin bronzes can show distinctive colour reflection, as well as mechanical properties and corrosion resistance that clearly distinguish them from the classical bronze composition (with 8–12 wt.% tin). In the present study samples of archaeological high-tin bronze bells were studied by optical microscopy, SEM-EDX, and Raman imaging with the aim of characterising their microstructural long-term corrosion patterns. Results show the presence of high quantities of δ phase, when compared to the classical bronze composition, which makes some corrosion structures more visible in these alloys. The corrosion morphologies show selective corrosion of different metal phases along depth of corrosion, which were attributed to different oxygen potentials. This study proposes a classification of four types of corrosion structures occurring in two-phase bronzes as a consequence of aeration conditions during burial time and aeration within the corrosion structure.en
dc.description.versionauthorsversion
dc.description.versionpublished
dc.format.extent2132732
dc.identifier.doi10.1080/00393630.2020.1857523
dc.identifier.issn0039-3630
dc.identifier.otherPURE: 27515051
dc.identifier.otherPURE UUID: e9a12e71-b54c-4624-a9d9-0f4ad4db99c3
dc.identifier.otherScopus: 85098502983
dc.identifier.otherWOS: 000604014900001
dc.identifier.otherORCID: /0000-0001-7350-649X/work/91426682
dc.identifier.otherORCID: /0000-0002-4821-3895/work/91427006
dc.identifier.otherORCID: /0000-0002-0914-8517/work/91427102
dc.identifier.urihttp://hdl.handle.net/10362/114687
dc.identifier.urlhttps://www.scopus.com/pages/publications/85098502983
dc.language.isoeng
dc.peerreviewedyes
dc.subjectArchaeological artefacts
dc.subjectbells
dc.subjecthigh-tin bronze
dc.subjectlong-term corrosion
dc.subjectConservation
dc.titleCharacterisation of Archaeological High-tin Bronze Corrosion Structuresen
dc.typejournal article
degois.publication.firstPage222
degois.publication.issue4
degois.publication.lastPage236
degois.publication.titleStudies in Conservation
degois.publication.volume67
dspace.entity.typePublication
rcaap.rightsopenAccess

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