Micro-arc and thermal oxidized titanium matrix composites for tribocorrosion-resistant biomedical implants

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorCMEMS-UMinho – Center of MicroElectroMechanical Systems – Universidade Minho-
Autor(es): dc.contributorLABBELS–Associate Laboratory-
Autor(es): dc.contributorUniversity of Porto-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorTribocorrosion and Nanomedicine-
Autor(es): dc.contributorCentro Brasileiro de Pesquisa Física (CBPF)-
Autor(es): dc.contributorInstitute of Science and Innovation in Mechanical and Industrial Engineering-
Autor(es): dc.contributorIzmir Institute of Technology-
Autor(es): dc.creatorSousa, Luís-
Autor(es): dc.creatorCosta, Natália A.-
Autor(es): dc.creatorRossi, Andre-
Autor(es): dc.creatorSimões, Sónia-
Autor(es): dc.creatorToptan, Fatih-
Autor(es): dc.creatorAlves, Alexandra C.-
Data de aceite: dc.date.accessioned2025-08-21T22:41:50Z-
Data de disponibilização: dc.date.available2025-08-21T22:41:50Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-06-15-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.surfcoat.2024.130854-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/307595-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/307595-
Descrição: dc.descriptionSuperior tribocorrosion resistance is offered by titanium matrix composites (TMCs) compared to their unreinforced matrix metal, but bioactivity concerns are raised for biomedical applications. Simple methods such as micro-arc oxidation (MAO) and thermal oxidation (TO) are employed to enhance the bioactivity and degradation resistance of Ti. However, the impact of those surface treatments on TMC surfaces is poorly understood. Therefore, the present work aimed to explore the influence of MAO and TO treatments on the surfaces of in-situ Ti-TiB-TiC and ex-situ Ti-B4C composites, and to assess their corrosion and tribocorrosion performance. Corrosion and tribocorrosion tests were conducted in phosphate-buffered saline solution (PBS) at body temperature. Electrochemical assays were performed by means of potentiodynamic polarization scans while additional potentiostatic tests were performed for the untreated ex-situ composites. Tribo-electrochemical assays were conducted under open circuit potential (OCP) and under normal loads of 0.5 and 10 N against a 10 mm diameter alumina ball in a reciprocating ball-on-plate tribometer. Results revealed reinforcement detachments in ex-situ composites after both treatments. This was primarily attributed to oxide layer growth at the reinforcement/reaction zone interface. Hence, the use of MAO and TO on ex-situ Ti-B4C composites may not be appropriate for biomedical applications, mainly because the B4C particles tend to detach during the treatment. In contrast, TO-treated in-situ composites displayed excellent combination of corrosion and tribocorrosion performance, even under elevated applied loads, mainly due to the existence of the oxygen diffusion zone (ODZ) beneath the oxide surface produced by TO, together with the more stable electrochemical properties observed during steady-state conditions.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionFundação para a Ciência e a Tecnologia-
Descrição: dc.descriptionCMEMS-UMinho – Center of MicroElectroMechanical Systems – Universidade Minho Campus de Azurém-
Descrição: dc.descriptionLABBELS–Associate Laboratory, Guimarães-
Descrição: dc.descriptionDEMM Department of Metallurgical and Materials Engineering University of Porto, Rua Dr. Roberto Frias-
Descrição: dc.descriptionUNESP – Universidade Estadual Paulista Faculdade de Ciências, SP-
Descrição: dc.descriptionIBTN/Br – Brazilian Branch of the Institute of Biomaterials Tribocorrosion and Nanomedicine, SP-
Descrição: dc.descriptionCentro Brasileiro de Pesquisa Física (CBPF), R. Dr. Xavier Sigaud, 150 - Urca, RJ-
Descrição: dc.descriptionLAETA/INEGI Institute of Science and Innovation in Mechanical and Industrial Engineering, R. Dr. Roberto Frias-
Descrição: dc.descriptionDepartment of Materials Science and Engineering Izmir Institute of Technology, Izmir-
Descrição: dc.descriptionUNESP – Universidade Estadual Paulista Faculdade de Ciências, SP-
Descrição: dc.descriptionFAPESP: 2017/24319-7-
Descrição: dc.descriptionFAPESP: 2018/25532-9-
Descrição: dc.descriptionFundação para a Ciência e a Tecnologia: UID/EEA/04436/2019-
Idioma: dc.languageen-
Relação: dc.relationSurface and Coatings Technology-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectCorrosion-
Palavras-chave: dc.subjectMicro-arc oxidation-
Palavras-chave: dc.subjectThermal treatment-
Palavras-chave: dc.subjectTitanium matrix composite-
Palavras-chave: dc.subjectTribocorrosion-
Título: dc.titleMicro-arc and thermal oxidized titanium matrix composites for tribocorrosion-resistant biomedical implants-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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