Effect of bio-functional MAO layers on the electrochemical behaviour of highly porous Ti

Detalhes bibliográficos
Autor(a) principal: Alves, A. C.
Data de Publicação: 2020
Outros Autores: Costa, A. I., Toptan, F. [UNESP], Alves, J. L., Leonor, I., Ribeiro, E., Reis, R. L., Pinto, A. M.P., Fernandes, J. C.S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.surfcoat.2020.125487
http://hdl.handle.net/11449/198543
Resumo: Ti foams are attractive for orthopaedic applications due to reduced Young's modulus and ability of bone in-growth. However, poor corrosion behaviour and lack of bioactivity are yet to be overcome. In the present work, highly porous Ti samples were processed by powder metallurgy with space holder technique and bio-functionalized by micro-arc oxidation, resulting in nano/micro structured TiO2 surfaces containing bioactive elements. The electrochemical behaviour of these bio-functionalized highly porous Ti surfaces was evaluated through potentiodynamic polarization and EIS in physiological solution at body temperature. Results showed that bio-functionalization improved the corrosion behaviour of highly porous Ti. However, increased macro-porosity led to an increased corrosion rate.
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spelling Effect of bio-functional MAO layers on the electrochemical behaviour of highly porous TiCorrosionEISMicro-arc oxidationPorous TiPowder metallurgyTi foams are attractive for orthopaedic applications due to reduced Young's modulus and ability of bone in-growth. However, poor corrosion behaviour and lack of bioactivity are yet to be overcome. In the present work, highly porous Ti samples were processed by powder metallurgy with space holder technique and bio-functionalized by micro-arc oxidation, resulting in nano/micro structured TiO2 surfaces containing bioactive elements. The electrochemical behaviour of these bio-functionalized highly porous Ti surfaces was evaluated through potentiodynamic polarization and EIS in physiological solution at body temperature. Results showed that bio-functionalization improved the corrosion behaviour of highly porous Ti. However, increased macro-porosity led to an increased corrosion rate.Fundação para a Ciência e a TecnologiaCMEMS-UMinho - Center of MicroElectroMechanical Systems University of MinhoDep. Mechanical Engineering University of MinhoIBTN/Br – Brazilian Branch of the Institute of Biomaterials Tribocorrosion and Nanomedicine UNESP, Campus de Bauru, Av. Eng. Luiz Edmundo Carrijo Coube, 14-013B's Research Group – Biomaterials Biodegradables and Biomimetics University of MinhoICVS/3B's-PT Government Assoc. Laboratory University of MinhoDepartment of Chemical Engineering – Instituto Superior Técnico University of LisbonCQE – Instituto Superior TécnicoIBTN/Br – Brazilian Branch of the Institute of Biomaterials Tribocorrosion and Nanomedicine UNESP, Campus de Bauru, Av. Eng. Luiz Edmundo Carrijo Coube, 14-01Fundação para a Ciência e a Tecnologia: 2020-2023Fundação para a Ciência e a Tecnologia: M-ERA NET/0001/2015Fundação para a Ciência e a Tecnologia: UID/EEA/04436/2019University of MinhoUniversidade Estadual Paulista (Unesp)University of LisbonCQE – Instituto Superior TécnicoAlves, A. C.Costa, A. I.Toptan, F. [UNESP]Alves, J. L.Leonor, I.Ribeiro, E.Reis, R. L.Pinto, A. M.P.Fernandes, J. C.S.2020-12-12T01:15:42Z2020-12-12T01:15:42Z2020-03-25info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.surfcoat.2020.125487Surface and Coatings Technology, v. 386.0257-8972http://hdl.handle.net/11449/19854310.1016/j.surfcoat.2020.1254872-s2.0-85079651124Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengSurface and Coatings Technologyinfo:eu-repo/semantics/openAccess2021-10-22T14:03:03Zoai:repositorio.unesp.br:11449/198543Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:40:52.676114Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Effect of bio-functional MAO layers on the electrochemical behaviour of highly porous Ti
title Effect of bio-functional MAO layers on the electrochemical behaviour of highly porous Ti
spellingShingle Effect of bio-functional MAO layers on the electrochemical behaviour of highly porous Ti
Alves, A. C.
Corrosion
EIS
Micro-arc oxidation
Porous Ti
Powder metallurgy
title_short Effect of bio-functional MAO layers on the electrochemical behaviour of highly porous Ti
title_full Effect of bio-functional MAO layers on the electrochemical behaviour of highly porous Ti
title_fullStr Effect of bio-functional MAO layers on the electrochemical behaviour of highly porous Ti
title_full_unstemmed Effect of bio-functional MAO layers on the electrochemical behaviour of highly porous Ti
title_sort Effect of bio-functional MAO layers on the electrochemical behaviour of highly porous Ti
author Alves, A. C.
author_facet Alves, A. C.
Costa, A. I.
Toptan, F. [UNESP]
Alves, J. L.
Leonor, I.
Ribeiro, E.
Reis, R. L.
Pinto, A. M.P.
Fernandes, J. C.S.
author_role author
author2 Costa, A. I.
Toptan, F. [UNESP]
Alves, J. L.
Leonor, I.
Ribeiro, E.
Reis, R. L.
Pinto, A. M.P.
Fernandes, J. C.S.
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv University of Minho
Universidade Estadual Paulista (Unesp)
University of Lisbon
CQE – Instituto Superior Técnico
dc.contributor.author.fl_str_mv Alves, A. C.
Costa, A. I.
Toptan, F. [UNESP]
Alves, J. L.
Leonor, I.
Ribeiro, E.
Reis, R. L.
Pinto, A. M.P.
Fernandes, J. C.S.
dc.subject.por.fl_str_mv Corrosion
EIS
Micro-arc oxidation
Porous Ti
Powder metallurgy
topic Corrosion
EIS
Micro-arc oxidation
Porous Ti
Powder metallurgy
description Ti foams are attractive for orthopaedic applications due to reduced Young's modulus and ability of bone in-growth. However, poor corrosion behaviour and lack of bioactivity are yet to be overcome. In the present work, highly porous Ti samples were processed by powder metallurgy with space holder technique and bio-functionalized by micro-arc oxidation, resulting in nano/micro structured TiO2 surfaces containing bioactive elements. The electrochemical behaviour of these bio-functionalized highly porous Ti surfaces was evaluated through potentiodynamic polarization and EIS in physiological solution at body temperature. Results showed that bio-functionalization improved the corrosion behaviour of highly porous Ti. However, increased macro-porosity led to an increased corrosion rate.
publishDate 2020
dc.date.none.fl_str_mv 2020-12-12T01:15:42Z
2020-12-12T01:15:42Z
2020-03-25
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.2020.125487
Surface and Coatings Technology, v. 386.
0257-8972
http://hdl.handle.net/11449/198543
10.1016/j.surfcoat.2020.125487
2-s2.0-85079651124
url http://dx.doi.org/10.1016/j.surfcoat.2020.125487
http://hdl.handle.net/11449/198543
identifier_str_mv Surface and Coatings Technology, v. 386.
0257-8972
10.1016/j.surfcoat.2020.125487
2-s2.0-85079651124
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
_version_ 1808128549811388416

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