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

Detalhes bibliográficos
Autor(a) principal: Alves, Alexandra Manuela Vieira Cruz Pinto
Data de Publicação: 2020
Outros Autores: Costa, A., I, Toptan, Fatih, Alves, J. L., Leonor, I. B., Ribeiro, E., Reis, R. L., Pinto, A. M. P., Fernandes, J. C. S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/66295
Resumo: Ti foams are attractive for orthopaedic applications due to reduced Young's modulus and ability of bone ingrowth. 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 TiPowder metallurgyPorous TiMicro-arc oxidationCorrosionEISScience & TechnologyTi foams are attractive for orthopaedic applications due to reduced Young's modulus and ability of bone ingrowth. 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.This work is supported by FCT with the reference project UID/EEA/04436/2019, M-ERA NET/0001/2015 project, and Programa de Accoes Universitarias Integradas Luso-Francesas' (PAUILF TC-12_14). CQE is financed by FCT under Pluriannual contract 2020-2023. The authors also gratefully acknowledge the "Investissements d'avenir" programs (nos. ANR-11-IDEX-0003-02 and ANR-10-EQPX-37 MATMECA Grant) for financial support on Micro-CT analysis.Elsevier Science SAUniversidade do MinhoAlves, Alexandra Manuela Vieira Cruz PintoCosta, A., IToptan, FatihAlves, J. L.Leonor, I. B.Ribeiro, E.Reis, R. L.Pinto, A. M. P.Fernandes, J. C. S.20202020-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/66295eng0257-897210.1016/j.surfcoat.2020.125487info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:22:14Zoai:repositorium.sdum.uminho.pt:1822/66295Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:15:41.761296Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
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, Alexandra Manuela Vieira Cruz Pinto
Powder metallurgy
Porous Ti
Micro-arc oxidation
Corrosion
EIS
Science & Technology
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, Alexandra Manuela Vieira Cruz Pinto
author_facet Alves, Alexandra Manuela Vieira Cruz Pinto
Costa, A., I
Toptan, Fatih
Alves, J. L.
Leonor, I. B.
Ribeiro, E.
Reis, R. L.
Pinto, A. M. P.
Fernandes, J. C. S.
author_role author
author2 Costa, A., I
Toptan, Fatih
Alves, J. L.
Leonor, I. B.
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 Universidade do Minho
dc.contributor.author.fl_str_mv Alves, Alexandra Manuela Vieira Cruz Pinto
Costa, A., I
Toptan, Fatih
Alves, J. L.
Leonor, I. B.
Ribeiro, E.
Reis, R. L.
Pinto, A. M. P.
Fernandes, J. C. S.
dc.subject.por.fl_str_mv Powder metallurgy
Porous Ti
Micro-arc oxidation
Corrosion
EIS
Science & Technology
topic Powder metallurgy
Porous Ti
Micro-arc oxidation
Corrosion
EIS
Science & Technology
description Ti foams are attractive for orthopaedic applications due to reduced Young's modulus and ability of bone ingrowth. 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
2020-01-01T00:00:00Z
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://hdl.handle.net/1822/66295
url http://hdl.handle.net/1822/66295
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0257-8972
10.1016/j.surfcoat.2020.125487
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier Science SA
publisher.none.fl_str_mv Elsevier Science SA
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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