Galvanic corrosion of two non noble dental alloys

Detalhes bibliográficos
Autor(a) principal: Capelo, S.
Data de Publicação: 2014
Outros Autores: Proença, L., Fernandes, J. C. S., Fonseca, I. T. E.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.26/14741
Resumo: Artigo licenciado sob uma Licença Creative Commons: https://creativecommons.org/licenses/by/4.0/
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spelling Galvanic corrosion of two non noble dental alloysDental alloysWiron®88Remanium 2000+Ions releaseGalvanic couplesArtigo licenciado sob uma Licença Creative Commons: https://creativecommons.org/licenses/by/4.0/"This study aims to evaluate the corrosion resistance of two nonnoble dental alloys, namely, the Wiron®88 (Ni–Cr–Mo) and the Remanium 2000+ (Co–Cr–Mo–W). A noble alloy, the V-Gnathos® Plus (AuPt) previously studied was also considered for the purpose of comparison. The study was conducted in artificial saliva, pH 7.1, at 37 °C, by cyclic and linear sweep voltammetry, electrochemical impedance spectroscopy and chronoamperometry. The Rp value of the alloy of high contents of Ni, the Wiron®88, was 26.2±0.2 kΩ cm2 and of the one with high contents of Co, the Remanium 2000+, was 22.5±0.6 kΩ cm2. Data from linear polarization resistance and electrochemical impedance spectroscopy lead to the same order for the resistance against corrosion. The order from the less to the more reactive alloy is: Wiron®88 → Remanium 2000+. The galvanic cell obtained by coupling the two nonnoble alloys presents very low cell potential (a few mV, -18 mV), while the galvanic cell between one noble alloy (the V-Gnathos® Plus) and the Wiron®88 showed a higher cell potential (-104 mV). Both galvanic couples, under short circuit, have lead to the release of cations, namely, Co2+, in the case of the Wiron®88|Remanium 2000+ and Ni2+ for the Wiron®88|V-Gnathos® Plus, galvanic couples, respectively, with the ionic concentrations reaching values of 12.15 and 7.30 μg L-1 (7.30 ppb), respectively. SEM micrographs obtained after 25 days immersion in artificial saliva, at 37 °C, showed the formation of well-defined pits on the surface of the two non-noble alloys."ESGRepositório ComumCapelo, S.Proença, L.Fernandes, J. C. S.Fonseca, I. T. E.2016-09-19T13:10:59Z2014-01-01T00:00:00Z2014-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.26/14741engInt. J. Electrochem. Sci., 9 (2014) 593 - 6091452-3981info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-10-06T14:52:27Zoai:comum.rcaap.pt:10400.26/14741Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T15:08:19.932052Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Galvanic corrosion of two non noble dental alloys
title Galvanic corrosion of two non noble dental alloys
spellingShingle Galvanic corrosion of two non noble dental alloys
Capelo, S.
Dental alloys
Wiron®88
Remanium 2000+
Ions release
Galvanic couples
title_short Galvanic corrosion of two non noble dental alloys
title_full Galvanic corrosion of two non noble dental alloys
title_fullStr Galvanic corrosion of two non noble dental alloys
title_full_unstemmed Galvanic corrosion of two non noble dental alloys
title_sort Galvanic corrosion of two non noble dental alloys
author Capelo, S.
author_facet Capelo, S.
Proença, L.
Fernandes, J. C. S.
Fonseca, I. T. E.
author_role author
author2 Proença, L.
Fernandes, J. C. S.
Fonseca, I. T. E.
author2_role author
author
author
dc.contributor.none.fl_str_mv Repositório Comum
dc.contributor.author.fl_str_mv Capelo, S.
Proença, L.
Fernandes, J. C. S.
Fonseca, I. T. E.
dc.subject.por.fl_str_mv Dental alloys
Wiron®88
Remanium 2000+
Ions release
Galvanic couples
topic Dental alloys
Wiron®88
Remanium 2000+
Ions release
Galvanic couples
description Artigo licenciado sob uma Licença Creative Commons: https://creativecommons.org/licenses/by/4.0/
publishDate 2014
dc.date.none.fl_str_mv 2014-01-01T00:00:00Z
2014-01-01T00:00:00Z
2016-09-19T13:10:59Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.26/14741
url http://hdl.handle.net/10400.26/14741
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Int. J. Electrochem. Sci., 9 (2014) 593 - 609
1452-3981
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv ESG
publisher.none.fl_str_mv ESG
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instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
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repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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