Synergistic protection against corrosion of AA2024-T3 by sol-gel coating modified with La and Mo-enriched zeolites

Detalhes bibliográficos
Autor(a) principal: Dias, Susana
Data de Publicação: 2014
Outros Autores: Lamaka, S. V., Cunha Diamantino, Teresa, Ferreira, M. G. 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/10400.9/2633
Resumo: The present work demonstrates an improvement in corrosion protection of sol-gel coatings modified with a mixture of lanthanum and molybdate-enriched zeolite microparticles (La+Mo) due to synergistic effect between lanthanum and molybdate. The effect of these inhibitor species on protection of AA2024-T3 substrate has been studied by Electrochemical Impedance Spectroscopy and Localized Electrochemical Impedance Spectroscopy. Both techniques revealed an enhanced protection when compared with the case where the inhibitors were used alone. The inhibiting mechanism could involve on demand release of molybdate and lanthanum ions from the loaded zeolite followed by the formation of molybdenum oxide/hydroxide and a Mo-Na-La compound on intermetallic particles.
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spelling Synergistic protection against corrosion of AA2024-T3 by sol-gel coating modified with La and Mo-enriched zeolitesMaterialsSol-gel coatingsCorrosionElectrochemical impedance spectroscopyThe present work demonstrates an improvement in corrosion protection of sol-gel coatings modified with a mixture of lanthanum and molybdate-enriched zeolite microparticles (La+Mo) due to synergistic effect between lanthanum and molybdate. The effect of these inhibitor species on protection of AA2024-T3 substrate has been studied by Electrochemical Impedance Spectroscopy and Localized Electrochemical Impedance Spectroscopy. Both techniques revealed an enhanced protection when compared with the case where the inhibitors were used alone. The inhibiting mechanism could involve on demand release of molybdate and lanthanum ions from the loaded zeolite followed by the formation of molybdenum oxide/hydroxide and a Mo-Na-La compound on intermetallic particles.The Electrochemical SocietyRepositório do LNEGDias, SusanaLamaka, S. V.Cunha Diamantino, TeresaFerreira, M. G. S.2015-03-11T17:48:27Z20142014-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.9/2633engDias, S.A.S.; Lamaka, S.V.; Diamantino, T.C.; Ferreira, M.G.S. - Synergistic protection against corrosion of AA2024-T3 by sol-gel coating modified with La and Mo-enriched zeolites. In: Journal of The Electrochemical Society, 2014, Vol. 161, nº 4, p. C215-C2220013-4651info: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:RCAAP2023-01-22T05:05:33Zoai:repositorio.lneg.pt:10400.9/2633Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T15:35:36.587450Repositório 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 Synergistic protection against corrosion of AA2024-T3 by sol-gel coating modified with La and Mo-enriched zeolites
title Synergistic protection against corrosion of AA2024-T3 by sol-gel coating modified with La and Mo-enriched zeolites
spellingShingle Synergistic protection against corrosion of AA2024-T3 by sol-gel coating modified with La and Mo-enriched zeolites
Dias, Susana
Materials
Sol-gel coatings
Corrosion
Electrochemical impedance spectroscopy
title_short Synergistic protection against corrosion of AA2024-T3 by sol-gel coating modified with La and Mo-enriched zeolites
title_full Synergistic protection against corrosion of AA2024-T3 by sol-gel coating modified with La and Mo-enriched zeolites
title_fullStr Synergistic protection against corrosion of AA2024-T3 by sol-gel coating modified with La and Mo-enriched zeolites
title_full_unstemmed Synergistic protection against corrosion of AA2024-T3 by sol-gel coating modified with La and Mo-enriched zeolites
title_sort Synergistic protection against corrosion of AA2024-T3 by sol-gel coating modified with La and Mo-enriched zeolites
author Dias, Susana
author_facet Dias, Susana
Lamaka, S. V.
Cunha Diamantino, Teresa
Ferreira, M. G. S.
author_role author
author2 Lamaka, S. V.
Cunha Diamantino, Teresa
Ferreira, M. G. S.
author2_role author
author
author
dc.contributor.none.fl_str_mv Repositório do LNEG
dc.contributor.author.fl_str_mv Dias, Susana
Lamaka, S. V.
Cunha Diamantino, Teresa
Ferreira, M. G. S.
dc.subject.por.fl_str_mv Materials
Sol-gel coatings
Corrosion
Electrochemical impedance spectroscopy
topic Materials
Sol-gel coatings
Corrosion
Electrochemical impedance spectroscopy
description The present work demonstrates an improvement in corrosion protection of sol-gel coatings modified with a mixture of lanthanum and molybdate-enriched zeolite microparticles (La+Mo) due to synergistic effect between lanthanum and molybdate. The effect of these inhibitor species on protection of AA2024-T3 substrate has been studied by Electrochemical Impedance Spectroscopy and Localized Electrochemical Impedance Spectroscopy. Both techniques revealed an enhanced protection when compared with the case where the inhibitors were used alone. The inhibiting mechanism could involve on demand release of molybdate and lanthanum ions from the loaded zeolite followed by the formation of molybdenum oxide/hydroxide and a Mo-Na-La compound on intermetallic particles.
publishDate 2014
dc.date.none.fl_str_mv 2014
2014-01-01T00:00:00Z
2015-03-11T17:48:27Z
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/10400.9/2633
url http://hdl.handle.net/10400.9/2633
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Dias, S.A.S.; Lamaka, S.V.; Diamantino, T.C.; Ferreira, M.G.S. - Synergistic protection against corrosion of AA2024-T3 by sol-gel coating modified with La and Mo-enriched zeolites. In: Journal of The Electrochemical Society, 2014, Vol. 161, nº 4, p. C215-C222
0013-4651
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 The Electrochemical Society
publisher.none.fl_str_mv The Electrochemical Society
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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