Comparative study of nanostructured titania grown by electrochemical anodization of α-Ti and β-TiNi substrates in organic electrolytes

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dc.creatorPedro Damas Resende
dc.creatorRosa Maria Rabelo Junqueira
dc.creatorJéssica Dornelas Silva
dc.creatorNatália Isabel Azevedo Lopes
dc.creatorLeandro de Arruda Santos
dc.creatorVicente Tadeu Lopes Buono
dc.date.accessioned2023-07-27T18:39:26Z
dc.date.accessioned2025-09-08T23:30:06Z
dc.date.available2023-07-27T18:39:26Z
dc.date.issued2020
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.format.mimetypepdf
dc.identifier.doihttps://doi.org/10.1016/j.jmrt.2020.07.009
dc.identifier.issn2238-7854
dc.identifier.urihttps://hdl.handle.net/1843/57072
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Materials Research and Technology
dc.rightsAcesso Aberto
dc.subjectLigas de niquel-titanio
dc.subjectEngenharia mecânica
dc.subject.otherNickel-Titanium
dc.subject.otherAnodization
dc.subject.otherTitania nanotubes
dc.subject.otherAnodic films
dc.subject.otherNanostructured oxide films
dc.titleComparative study of nanostructured titania grown by electrochemical anodization of α-Ti and β-TiNi substrates in organic electrolytes
dc.typeArtigo de periódico
local.citation.epage10129
local.citation.issue5
local.citation.spage10121
local.citation.volume9
local.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.
local.identifier.orcidhttps://orcid.org/0000-0001-9172-6429
local.publisher.countryBrasil
local.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA METALÚRGICA
local.publisher.departmentENGENHARIA - ESCOLA DE ENGENHARIA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S223878542031509X?via%3Dihub

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