Effects of substituting ytterbium for scandium on corrosion behaviour of Al-Sc alloy

Detalhes bibliográficos
Autor(a) principal: Tuan, N. Q.
Data de Publicação: 2015
Outros Autores: Alves, Alexandra Manuela Vieira Cruz Pinto, Toptan, Fatih, Lopes, A. B., Pinto, A. M. P.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/51366
Resumo: The localized corrosion and electrochemical behaviour of Al-0.28 wt.% Sc and Al-0.24 wt.% Sc-0.07 wt.% Yb alloys have been studied in 3.5 wt.% NaCl solution. The results showed that the impurity intermetallic phases containing Fe can act as cathodes and promote localized corrosion in the surrounding matrix. Yb had strong effect on the polarization behaviour in the anodic domain of Al-Sc alloy by improving the pitting corrosion resistance of this alloy. It has been deduced that a high number density of fully coherent nano-sized Al3Sc or Al-3(Sc, Yb) precipitates in heat treated alloys can enhance the passivation tendency of these alloys.
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spelling Effects of substituting ytterbium for scandium on corrosion behaviour of Al-Sc alloyAluminium–Scandium alloysHigh-resolution TEMLocalized corrosionPolarizationYtterbiumScience & TechnologyThe localized corrosion and electrochemical behaviour of Al-0.28 wt.% Sc and Al-0.24 wt.% Sc-0.07 wt.% Yb alloys have been studied in 3.5 wt.% NaCl solution. The results showed that the impurity intermetallic phases containing Fe can act as cathodes and promote localized corrosion in the surrounding matrix. Yb had strong effect on the polarization behaviour in the anodic domain of Al-Sc alloy by improving the pitting corrosion resistance of this alloy. It has been deduced that a high number density of fully coherent nano-sized Al3Sc or Al-3(Sc, Yb) precipitates in heat treated alloys can enhance the passivation tendency of these alloys.This research was supported by The Project Bridging The Gap, funded by the Erasmus Mundus External Cooperation Window Program. Acknowledgements also to the University of Minho, for the provision of research facilitiesinfo:eu-repo/semantics/publishedVersionWileyUniversidade do MinhoTuan, N. Q.Alves, Alexandra Manuela Vieira Cruz PintoToptan, FatihLopes, A. B.Pinto, A. M. P.20152015-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/51366eng0947-511710.1002/maco.201508360info: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:RCAAP2023-07-21T12:33:59Zoai:repositorium.sdum.uminho.pt:1822/51366Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:29:35.986359Repositório 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 Effects of substituting ytterbium for scandium on corrosion behaviour of Al-Sc alloy
title Effects of substituting ytterbium for scandium on corrosion behaviour of Al-Sc alloy
spellingShingle Effects of substituting ytterbium for scandium on corrosion behaviour of Al-Sc alloy
Tuan, N. Q.
Aluminium–Scandium alloys
High-resolution TEM
Localized corrosion
Polarization
Ytterbium
Science & Technology
title_short Effects of substituting ytterbium for scandium on corrosion behaviour of Al-Sc alloy
title_full Effects of substituting ytterbium for scandium on corrosion behaviour of Al-Sc alloy
title_fullStr Effects of substituting ytterbium for scandium on corrosion behaviour of Al-Sc alloy
title_full_unstemmed Effects of substituting ytterbium for scandium on corrosion behaviour of Al-Sc alloy
title_sort Effects of substituting ytterbium for scandium on corrosion behaviour of Al-Sc alloy
author Tuan, N. Q.
author_facet Tuan, N. Q.
Alves, Alexandra Manuela Vieira Cruz Pinto
Toptan, Fatih
Lopes, A. B.
Pinto, A. M. P.
author_role author
author2 Alves, Alexandra Manuela Vieira Cruz Pinto
Toptan, Fatih
Lopes, A. B.
Pinto, A. M. P.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Tuan, N. Q.
Alves, Alexandra Manuela Vieira Cruz Pinto
Toptan, Fatih
Lopes, A. B.
Pinto, A. M. P.
dc.subject.por.fl_str_mv Aluminium–Scandium alloys
High-resolution TEM
Localized corrosion
Polarization
Ytterbium
Science & Technology
topic Aluminium–Scandium alloys
High-resolution TEM
Localized corrosion
Polarization
Ytterbium
Science & Technology
description The localized corrosion and electrochemical behaviour of Al-0.28 wt.% Sc and Al-0.24 wt.% Sc-0.07 wt.% Yb alloys have been studied in 3.5 wt.% NaCl solution. The results showed that the impurity intermetallic phases containing Fe can act as cathodes and promote localized corrosion in the surrounding matrix. Yb had strong effect on the polarization behaviour in the anodic domain of Al-Sc alloy by improving the pitting corrosion resistance of this alloy. It has been deduced that a high number density of fully coherent nano-sized Al3Sc or Al-3(Sc, Yb) precipitates in heat treated alloys can enhance the passivation tendency of these alloys.
publishDate 2015
dc.date.none.fl_str_mv 2015
2015-01-01T00:00:00Z
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/1822/51366
url http://hdl.handle.net/1822/51366
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0947-5117
10.1002/maco.201508360
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 Wiley
publisher.none.fl_str_mv Wiley
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
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