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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/57072
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dc.creatorPedro Damas Resendept_BR
dc.creatorRosa Maria Rabelo Junqueirapt_BR
dc.creatorJéssica Dornelas Silvapt_BR
dc.creatorNatália Isabel Azevedo Lopespt_BR
dc.creatorLeandro de Arruda Santospt_BR
dc.creatorVicente Tadeu Lopes Buonopt_BR
dc.date.accessioned2023-07-27T18:39:26Z-
dc.date.available2023-07-27T18:39:26Z-
dc.date.issued2020-
dc.citation.volume9pt_BR
dc.citation.issue5pt_BR
dc.citation.spage10121pt_BR
dc.citation.epage10129pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.jmrt.2020.07.009pt_BR
dc.identifier.issn2238-7854pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/57072-
dc.description.resumoThe motivation of this work is to compare methods for nanotube formation in α-Ti with the results obtained in β-TiNi by electrochemical anodization at the same conditions. Both substrates were characterized by XRD to assure their phase constitution at room temperature. Samples were anodized in 0.2%m. NH4F and 1%v. H2O in ethylene glycol solvent at 5, 15, 25, 45, and 60 V. Each experimental condition had its current densities recorded as a function of time and the resultant anodic films were characterized by FE-SEM. All conditions lead to nanotube formation in Ti substrates. TiNi samples anodized at 5 V produced evenly spread nanotubes with similar diameters of those in Ti. As the potential increased, the nanotubular aspects of titania in TiNi were increasingly lost. At higher anodization potentials, tubular structures can be seen in a matrix of sponge-like oxide formed due to the increase of oxygen evolution as the potential increased. Examination of the metal/oxide interface indicates that, even though spongy oxide was formed in TiNi substrates, the mechanism of growth initiation is similar to Ti samples. It is possible to conclude that for the same anodization conditions β-TiNi is more reactive than α-Ti and requires milder conditions to produce nanotubular surfaces.pt_BR
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorpt_BR
dc.format.mimetypepdfpt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA METALÚRGICApt_BR
dc.publisher.departmentENGENHARIA - ESCOLA DE ENGENHARIApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofJournal of Materials Research and Technologypt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectNickel-Titaniumpt_BR
dc.subjectAnodizationpt_BR
dc.subjectTitania nanotubespt_BR
dc.subjectAnodic filmspt_BR
dc.subjectNanostructured oxide filmspt_BR
dc.subject.otherLigas de niquel-titaniopt_BR
dc.subject.otherEngenharia mecânicapt_BR
dc.titleComparative study of nanostructured titania grown by electrochemical anodization of α-Ti and β-TiNi substrates in organic electrolytespt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.sciencedirect.com/science/article/pii/S223878542031509X?via%3Dihubpt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-9172-6429pt_BR
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