Tribocorrosion behaviour of hot pressed CoCrMo−Al2O3 composites for biomedical applications

Detalhes bibliográficos
Autor(a) principal: Doni, Z.
Data de Publicação: 2014
Outros Autores: Alves, A. C., Toptan, Fatih, Pinto, A. M. P., Rocha, L. A., Buciumeanu, Mihaela, Palaghian, L., Silva, F. 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/1822/34509
Resumo: Alumina/alumina wear couple can lower the wear rates and thus metallic ion releasing on load bearing metallic implant materials. However, the low fracture toughness of ceramics is still a major concern. Therefore, the present study aims to process and to triboelectrochemically characterise the 5 and 10 vol.-%Al2O3 reinforced CoCrMo matrix composites. Corrosion and tribocorrosion behaviour of the composites were investigated in 8 g L21 NaCl solution at body temperature. Corroded and worn surfaces were investigated by a field emission gun scanning electron microscope equipped with energy dispersive X-ray spectroscopy. After tribocorrosion experi- ments, wear rates were calculated using a profilometer. Results suggest that Al2O3 particle addition decreased the tendency of CoCrMo alloy to corrosion under both static and tribocorrosion conditions. However, no significant influence on the corrosion and wear rates was observed in composites mainly due to increased porosity and insufficient matrix/ reinforcement bonding.
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spelling Tribocorrosion behaviour of hot pressed CoCrMo−Al2O3 composites for biomedical applicationsAl2O3CoCrMoCompositeCorrosionHot pressingTribocorrosionAl O 2 3Engenharia e Tecnologia::Engenharia dos MateriaisScience & TechnologyAlumina/alumina wear couple can lower the wear rates and thus metallic ion releasing on load bearing metallic implant materials. However, the low fracture toughness of ceramics is still a major concern. Therefore, the present study aims to process and to triboelectrochemically characterise the 5 and 10 vol.-%Al2O3 reinforced CoCrMo matrix composites. Corrosion and tribocorrosion behaviour of the composites were investigated in 8 g L21 NaCl solution at body temperature. Corroded and worn surfaces were investigated by a field emission gun scanning electron microscope equipped with energy dispersive X-ray spectroscopy. After tribocorrosion experi- ments, wear rates were calculated using a profilometer. Results suggest that Al2O3 particle addition decreased the tendency of CoCrMo alloy to corrosion under both static and tribocorrosion conditions. However, no significant influence on the corrosion and wear rates was observed in composites mainly due to increased porosity and insufficient matrix/ reinforcement bonding.This study was supported by the Portuguese Foundation for Science and Technology (FCT-Portugal), under project no. EXCL/EMS-TEC/0460/2012, and The Calouste Gulbenkian Foundation through 'Programa de Mobilidade Academica para Professores'. The authors also would like to thank Professor A. Ramalho (Universidade de Coimbra) for the provision of profilometry facilities.W. S. Maney & Son Ltd.Universidade do MinhoDoni, Z.Alves, A. C.Toptan, FatihPinto, A. M. P.Rocha, L. A.Buciumeanu, MihaelaPalaghian, L.Silva, F. S.20142014-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/34509eng1751-583110.1179/1751584X14Y.0000000078info: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:RCAAP2023-07-21T12:07:07Zoai:repositorium.sdum.uminho.pt:1822/34509Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:57:59.083594Repositório 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 Tribocorrosion behaviour of hot pressed CoCrMo−Al2O3 composites for biomedical applications
title Tribocorrosion behaviour of hot pressed CoCrMo−Al2O3 composites for biomedical applications
spellingShingle Tribocorrosion behaviour of hot pressed CoCrMo−Al2O3 composites for biomedical applications
Doni, Z.
Al2O3
CoCrMo
Composite
Corrosion
Hot pressing
Tribocorrosion
Al O 2 3
Engenharia e Tecnologia::Engenharia dos Materiais
Science & Technology
title_short Tribocorrosion behaviour of hot pressed CoCrMo−Al2O3 composites for biomedical applications
title_full Tribocorrosion behaviour of hot pressed CoCrMo−Al2O3 composites for biomedical applications
title_fullStr Tribocorrosion behaviour of hot pressed CoCrMo−Al2O3 composites for biomedical applications
title_full_unstemmed Tribocorrosion behaviour of hot pressed CoCrMo−Al2O3 composites for biomedical applications
title_sort Tribocorrosion behaviour of hot pressed CoCrMo−Al2O3 composites for biomedical applications
author Doni, Z.
author_facet Doni, Z.
Alves, A. C.
Toptan, Fatih
Pinto, A. M. P.
Rocha, L. A.
Buciumeanu, Mihaela
Palaghian, L.
Silva, F. S.
author_role author
author2 Alves, A. C.
Toptan, Fatih
Pinto, A. M. P.
Rocha, L. A.
Buciumeanu, Mihaela
Palaghian, L.
Silva, F. S.
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Doni, Z.
Alves, A. C.
Toptan, Fatih
Pinto, A. M. P.
Rocha, L. A.
Buciumeanu, Mihaela
Palaghian, L.
Silva, F. S.
dc.subject.por.fl_str_mv Al2O3
CoCrMo
Composite
Corrosion
Hot pressing
Tribocorrosion
Al O 2 3
Engenharia e Tecnologia::Engenharia dos Materiais
Science & Technology
topic Al2O3
CoCrMo
Composite
Corrosion
Hot pressing
Tribocorrosion
Al O 2 3
Engenharia e Tecnologia::Engenharia dos Materiais
Science & Technology
description Alumina/alumina wear couple can lower the wear rates and thus metallic ion releasing on load bearing metallic implant materials. However, the low fracture toughness of ceramics is still a major concern. Therefore, the present study aims to process and to triboelectrochemically characterise the 5 and 10 vol.-%Al2O3 reinforced CoCrMo matrix composites. Corrosion and tribocorrosion behaviour of the composites were investigated in 8 g L21 NaCl solution at body temperature. Corroded and worn surfaces were investigated by a field emission gun scanning electron microscope equipped with energy dispersive X-ray spectroscopy. After tribocorrosion experi- ments, wear rates were calculated using a profilometer. Results suggest that Al2O3 particle addition decreased the tendency of CoCrMo alloy to corrosion under both static and tribocorrosion conditions. However, no significant influence on the corrosion and wear rates was observed in composites mainly due to increased porosity and insufficient matrix/ reinforcement bonding.
publishDate 2014
dc.date.none.fl_str_mv 2014
2014-01-01T00:00:00Z
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/1822/34509
url http://hdl.handle.net/1822/34509
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 1751-5831
10.1179/1751584X14Y.0000000078
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 W. S. Maney & Son Ltd.
publisher.none.fl_str_mv W. S. Maney & Son Ltd.
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
_version_ 1799132369056169984

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