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Simultaneous degradation by corrosion and wear of titanium in artificial saliva containing fluorides

dc.contributor.authorSouza, Júlio C.M.
dc.contributor.authorBarbosa, S. L
dc.contributor.authorAriza, E.
dc.contributor.authorCelis, J-P.
dc.contributor.authorRocha, L. A.
dc.date.accessioned2012-07-11T17:31:14Z
dc.date.available2012-07-11T17:31:14Z
dc.date.issued2012
dc.descriptionArticle in presspor
dc.description.abstractThe degradation of titanium-based oral rehabilitation systems can occur by corrosion and wear processes taking place simultaneously (tribocorrosion) and influenced by the presence of fluorides. In this study, the tribocorrosion behavior of titanium in artificial saliva solutions containing fluorides is investigated. Before sliding tests were started up, electrochemical measurements such as open circuit potential (OCP) and impedance spectroscopy (EIS) were performed to get information on the corrosion behavior of titanium in artificial saliva solutions. Then, sliding wear tests were carried out at the OCP taken by the test sample. Scanning electron microscopy and weight loss measurements were performed after the tribocorrosion tests. The presence of a compact passive surface film on titanium immersed was demonstrated in artificial saliva free of fluorides and in presence of up to 227 ppm F-. However, a progressive degradation of titanium was observed at a F- concentration of 12,300 ppm. Additionally, the corrosion and wear resistance of the titanium oxide film formed at a F- concentration of 12,300 ppm differ from the ones obtained up to 227 ppm F- reflected by a decrease of the coefficient of friction although the material loss increased. The synergism between wear and corrosion processes on titanium needs thus to be further investigated to reach a reliable prediction of the long-term behavior of titanium-based prostheses and implants in the oral cavity.por
dc.description.sponsorshipThe authors acknowledge the financial support provided by AlBan Program (cod. E06D103407BR), the Erasmus student exchange program of the CEC, FCT (PTDC/CT/6750/2006), and the Scientific research Community on Surface Modification of Materials funded by the Flemish Science Foundation (WOG-FWO-Vlaanderen).por
dc.identifier.issn0043-1648
dc.identifier.urihttp://hdl.handle.net/10284/3251
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.relation.ispartofseriesWear;
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0043164812002050por
dc.subjectTitaniumpor
dc.subjectFluoridespor
dc.subjectWearpor
dc.subjectCorrosionpor
dc.subjectTribocorrosionpor
dc.subjectDegradationpor
dc.titleSimultaneous degradation by corrosion and wear of titanium in artificial saliva containing fluoridespor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceUnited Statespor
oaire.citation.titleWearpor
person.familyNameMatias de Souza
person.givenNameJúlio César
person.identifier1303570
person.identifier.ciencia-id011A-62E5-9B4E
person.identifier.orcid0000-0001-7999-4009
person.identifier.scopus-author-id36239438200
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublicationf42d6b8d-168c-4e88-b191-c5a5298dc8b0
relation.isAuthorOfPublication.latestForDiscoveryf42d6b8d-168c-4e88-b191-c5a5298dc8b0

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