Influence of the molybdenum on characteristics of oxide films produced by micro-arc oxidation on Ti-15Zr-based alloys
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.surfcoat.2021.126856 http://hdl.handle.net/11449/208323 |
Resumo: | Micro-arc oxidation (MAO) is a powerful tool to modify the surface of Ti alloys, in order to increase the lifetime of orthopedic implants. It is well established that the resulting oxide films are dependent on the parameters used during anodic treatment, however the influence of the substrate (bulk properties) is still a subject lacking for better understanding. This paper aims at studying the effect of molybdenum on characteristics of MAO films grown on promising Ti-15Zr-xMo alloys. The substrates were produced by arc-melting, and it was found to be constituted by α’ phase (Ti[sbnd]15Zr), α” + β phases (Ti-15Zr-5Mo), and only β phase (Ti-15Zr-10Mo and Ti-15Zr-15Mo). This β-stabilizing action of Mo was accompanied by modifications from lamellar to granular microstructures in the as-cast samples. After MAO treatment, Ti alloys containing Mo exhibited thinner oxide coatings with porous structures of smaller dimensions compared to the ones formed on Ti[sbnd]15Zr alloy, although the average pore shape has not been altered significantly. That film differences may be a result of changes in dielectric breakdown of the oxide through the formation of β phase in the bulk, while lamellar microstructures were also suppressed. Mo oxides (MoO3) were barely detected in the coatings, which were preferentially composed of TiO2 (anatase and rutile) and ZrO2. Regardless of the Mo content in the bulk, the coatings also showed CaCO3 and calcium phosphate compounds, indicating a successful incorporation of bioactive ions during MAO. |
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Influence of the molybdenum on characteristics of oxide films produced by micro-arc oxidation on Ti-15Zr-based alloysAnodic oxide characteristicsBiomaterialBulk propertiesMicro-arc oxidationTi-Zr-Mo alloyMicro-arc oxidation (MAO) is a powerful tool to modify the surface of Ti alloys, in order to increase the lifetime of orthopedic implants. It is well established that the resulting oxide films are dependent on the parameters used during anodic treatment, however the influence of the substrate (bulk properties) is still a subject lacking for better understanding. This paper aims at studying the effect of molybdenum on characteristics of MAO films grown on promising Ti-15Zr-xMo alloys. The substrates were produced by arc-melting, and it was found to be constituted by α’ phase (Ti[sbnd]15Zr), α” + β phases (Ti-15Zr-5Mo), and only β phase (Ti-15Zr-10Mo and Ti-15Zr-15Mo). This β-stabilizing action of Mo was accompanied by modifications from lamellar to granular microstructures in the as-cast samples. After MAO treatment, Ti alloys containing Mo exhibited thinner oxide coatings with porous structures of smaller dimensions compared to the ones formed on Ti[sbnd]15Zr alloy, although the average pore shape has not been altered significantly. That film differences may be a result of changes in dielectric breakdown of the oxide through the formation of β phase in the bulk, while lamellar microstructures were also suppressed. Mo oxides (MoO3) were barely detected in the coatings, which were preferentially composed of TiO2 (anatase and rutile) and ZrO2. Regardless of the Mo content in the bulk, the coatings also showed CaCO3 and calcium phosphate compounds, indicating a successful incorporation of bioactive ions during MAO.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)UNESP – Universidade Estadual Paulista Faculdade de CiênciasIBTN/Br – Brazilian Branch of the Institute of Biomaterials Tribocorrosion and NanomedicineIFSP – Federal Institute of Education Science and TechnologyCMEMS-UMinho – Center of MicroElectroMechanical Systems - Universidade do Minho, AzurémUNESP – Universidade Estadual Paulista Faculdade de CiênciasFAPESP: 00851-6/2015CNPq: 135334/2016-0CNPq: 143148/2015-0FAPESP: 2017/24300-4CNPq: 207417/2015-6CNPq: 307279/2013-8CNPq: 800571/2016-9CNPq: 800733/2014-2Universidade Estadual Paulista (Unesp)Tribocorrosion and NanomedicineScience and TechnologyCMEMS-UMinho – Center of MicroElectroMechanical Systems - Universidade do MinhoCosta, N. A. [UNESP]Correa, D. R.N.Lisboa-Filho, P. N. [UNESP]Sousa, T. S.P. [UNESP]Grandini, C. R. [UNESP]Rocha, L. A. [UNESP]2021-06-25T11:10:16Z2021-06-25T11:10:16Z2021-02-25info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.surfcoat.2021.126856Surface and Coatings Technology, v. 408.0257-8972http://hdl.handle.net/11449/20832310.1016/j.surfcoat.2021.1268562-s2.0-85099441020Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengSurface and Coatings Technologyinfo:eu-repo/semantics/openAccess2024-04-25T17:40:09Zoai:repositorio.unesp.br:11449/208323Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:28:20.543362Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Influence of the molybdenum on characteristics of oxide films produced by micro-arc oxidation on Ti-15Zr-based alloys |
title |
Influence of the molybdenum on characteristics of oxide films produced by micro-arc oxidation on Ti-15Zr-based alloys |
spellingShingle |
Influence of the molybdenum on characteristics of oxide films produced by micro-arc oxidation on Ti-15Zr-based alloys Costa, N. A. [UNESP] Anodic oxide characteristics Biomaterial Bulk properties Micro-arc oxidation Ti-Zr-Mo alloy |
title_short |
Influence of the molybdenum on characteristics of oxide films produced by micro-arc oxidation on Ti-15Zr-based alloys |
title_full |
Influence of the molybdenum on characteristics of oxide films produced by micro-arc oxidation on Ti-15Zr-based alloys |
title_fullStr |
Influence of the molybdenum on characteristics of oxide films produced by micro-arc oxidation on Ti-15Zr-based alloys |
title_full_unstemmed |
Influence of the molybdenum on characteristics of oxide films produced by micro-arc oxidation on Ti-15Zr-based alloys |
title_sort |
Influence of the molybdenum on characteristics of oxide films produced by micro-arc oxidation on Ti-15Zr-based alloys |
author |
Costa, N. A. [UNESP] |
author_facet |
Costa, N. A. [UNESP] Correa, D. R.N. Lisboa-Filho, P. N. [UNESP] Sousa, T. S.P. [UNESP] Grandini, C. R. [UNESP] Rocha, L. A. [UNESP] |
author_role |
author |
author2 |
Correa, D. R.N. Lisboa-Filho, P. N. [UNESP] Sousa, T. S.P. [UNESP] Grandini, C. R. [UNESP] Rocha, L. A. [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Tribocorrosion and Nanomedicine Science and Technology CMEMS-UMinho – Center of MicroElectroMechanical Systems - Universidade do Minho |
dc.contributor.author.fl_str_mv |
Costa, N. A. [UNESP] Correa, D. R.N. Lisboa-Filho, P. N. [UNESP] Sousa, T. S.P. [UNESP] Grandini, C. R. [UNESP] Rocha, L. A. [UNESP] |
dc.subject.por.fl_str_mv |
Anodic oxide characteristics Biomaterial Bulk properties Micro-arc oxidation Ti-Zr-Mo alloy |
topic |
Anodic oxide characteristics Biomaterial Bulk properties Micro-arc oxidation Ti-Zr-Mo alloy |
description |
Micro-arc oxidation (MAO) is a powerful tool to modify the surface of Ti alloys, in order to increase the lifetime of orthopedic implants. It is well established that the resulting oxide films are dependent on the parameters used during anodic treatment, however the influence of the substrate (bulk properties) is still a subject lacking for better understanding. This paper aims at studying the effect of molybdenum on characteristics of MAO films grown on promising Ti-15Zr-xMo alloys. The substrates were produced by arc-melting, and it was found to be constituted by α’ phase (Ti[sbnd]15Zr), α” + β phases (Ti-15Zr-5Mo), and only β phase (Ti-15Zr-10Mo and Ti-15Zr-15Mo). This β-stabilizing action of Mo was accompanied by modifications from lamellar to granular microstructures in the as-cast samples. After MAO treatment, Ti alloys containing Mo exhibited thinner oxide coatings with porous structures of smaller dimensions compared to the ones formed on Ti[sbnd]15Zr alloy, although the average pore shape has not been altered significantly. That film differences may be a result of changes in dielectric breakdown of the oxide through the formation of β phase in the bulk, while lamellar microstructures were also suppressed. Mo oxides (MoO3) were barely detected in the coatings, which were preferentially composed of TiO2 (anatase and rutile) and ZrO2. Regardless of the Mo content in the bulk, the coatings also showed CaCO3 and calcium phosphate compounds, indicating a successful incorporation of bioactive ions during MAO. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-06-25T11:10:16Z 2021-06-25T11:10:16Z 2021-02-25 |
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://dx.doi.org/10.1016/j.surfcoat.2021.126856 Surface and Coatings Technology, v. 408. 0257-8972 http://hdl.handle.net/11449/208323 10.1016/j.surfcoat.2021.126856 2-s2.0-85099441020 |
url |
http://dx.doi.org/10.1016/j.surfcoat.2021.126856 http://hdl.handle.net/11449/208323 |
identifier_str_mv |
Surface and Coatings Technology, v. 408. 0257-8972 10.1016/j.surfcoat.2021.126856 2-s2.0-85099441020 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Surface and Coatings Technology |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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1808129207322017792 |