Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/70193
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dc.contributor.authorIzquierdo, Javieren_US
dc.contributor.authorMareci, Danielen_US
dc.contributor.authorBolat, Georgianaen_US
dc.contributor.authorSantana, Juan J.en_US
dc.contributor.authorRodríguez Raposo,Raquelen_US
dc.contributor.authorFernández-Mérida, Luis C.en_US
dc.contributor.authorBurtan, Liviuen_US
dc.contributor.authorTrincă, Lucia C.en_US
dc.contributor.authorSouto, Ricardo M.en_US
dc.date.accessioned2020-02-06T07:17:05Z-
dc.date.available2020-02-06T07:17:05Z-
dc.date.issued2020en_US
dc.identifier.issn2075-4701en_US
dc.identifier.otherScopus-
dc.identifier.urihttp://hdl.handle.net/10553/70193-
dc.description.abstractBinary Zr-Ti alloys spontaneously develop a tenacious and compact oxide layer when their fresh surface is exposed either to air or to aqueous environments. Electrochemical impedance spectroscopy (EIS) analysis of Zr-45Ti, Zr-25Ti, and Zr-5Ti exposed to simulated physiological solutions at 37 °C evidences the formation of a non-sealing bilayer oxide film that accounts for the corrosion resistance of the materials. Unfortunately, these oxide layers may undergo breakdown and stable pitting corrosion regimes at anodic potentials within the range of those experienced in the human body under stress and surgical conditions. Improved corrosion resistance has been achieved by prior treatment of these alloys using thermal oxidation in air. EIS was employed to measure the corrosion resistance of the Zr-Ti alloys in simulated physiological solutions of a wide pH range (namely 3 ≤ pH ≤ 8) at 37 °C, and the best results were obtained for the alloys pre-treated at 500 °C. The formation of the passivating oxide layers in simulated physiological solution was monitored in situ using scanning electrochemical microscopy (SECM), finding a transition from an electrochemically active surface, characteristic of the bare metal, to the heterogeneous formation of oxide layers behaving as insulating surfaces towards electron transfer reactions.en_US
dc.languageengen_US
dc.relationRomanian National Authority for Scientific Research (CNCS-UEFISCDI, Bucharest, Romania; project no. PN-II-IDPCE-2011-3-0218)en_US
dc.relationCTQ2016-80522-Pen_US
dc.relation.ispartofMetalsen_US
dc.sourceMetals [2075-4701],v. 10 (2), 166.en_US
dc.subject3303 ingeniería y tecnología químicasen_US
dc.subject.otherBiomaterialen_US
dc.subject.otherCorrosion Resistanceen_US
dc.subject.otherElectrochemical Techniquesen_US
dc.subject.otherSurface Modificationen_US
dc.subject.otherZr-Ti Binary Alloysen_US
dc.titleImprovement of the corrosion resistance of biomedical zr-ti alloys using a thermal oxidation treatmenten_US
dc.typeinfo:eu-repo/semantics/articleen_US
dc.typeArticleen_US
dc.identifier.scopus85078531701-
dc.contributor.authorscopusid35388543300-
dc.contributor.authorscopusid24071462300-
dc.contributor.authorscopusid25642529100-
dc.contributor.authorscopusid35436067200-
dc.contributor.authorscopusid24291227900-
dc.contributor.authorscopusid6602627413-
dc.contributor.authorscopusid56584719300-
dc.contributor.authorscopusid55637683400-
dc.contributor.authorscopusid7005304036-
dc.identifier.issue2-
dc.relation.volume10en_US
dc.investigacionIngeniería y Arquitecturaen_US
dc.type2Artículoen_US
dc.utils.revisionen_US
dc.identifier.ulpgcen_US
dc.contributor.buulpgcBU-INGen_US
dc.description.sjr0,57
dc.description.jcr2,351
dc.description.sjrqQ1
dc.description.jcrqQ2
dc.description.scieSCIE
item.grantfulltextopen-
item.fulltextCon texto completo-
crisitem.author.deptGIR Sistemas industriales de eficiciencia, instrumentación y protección-
crisitem.author.deptDepartamento de Ingeniería de Procesos-
crisitem.author.orcid0000-0002-3030-2195-
crisitem.author.parentorgDepartamento de Ingeniería Electrónica y Automática-
crisitem.author.fullNameSantana Rodríguez, Juan José-
crisitem.author.fullNameRodríguez Raposo,Raquel-
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