Electrosynthesized polyaniline for the corrosion protection of aluminum alloy 2024-T3

Detalhes bibliográficos
Autor(a) principal: Huerta-Vilca,Domingo
Data de Publicação: 2003
Outros Autores: Moraes,Sandra R., Motheo,Artur J.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532003000100009
Resumo: Adherent polyaniline films on aluminum alloy 2024-T3 have been prepared by electrodeposition from aniline containing oxalic acid solution. The most appropriate method to prepare protective films was a successive galvanostatic deposition of 500 seconds. With this type of film, the open circuit potential of the coating shifted around 0.065V vs. SCE compared to the uncoated alloy. The polyaniline coatings can be considered as candidates to protect copper-rich (3 - 5%) aluminum alloys by avoiding the galvanic couple between re-deposited copper on the surface and the bulk alloy. The performance of the polyaniline films was verified by immersion tests up to 2.5 months. It was good with formation of some aluminum oxides due to electrolyte permeation so, in order to optimize the performance a coating formulation would content an isolation topcoat.
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spelling Electrosynthesized polyaniline for the corrosion protection of aluminum alloy 2024-T3aluminum alloyelectrosynthesispolyanilinecorrosion protectionAdherent polyaniline films on aluminum alloy 2024-T3 have been prepared by electrodeposition from aniline containing oxalic acid solution. The most appropriate method to prepare protective films was a successive galvanostatic deposition of 500 seconds. With this type of film, the open circuit potential of the coating shifted around 0.065V vs. SCE compared to the uncoated alloy. The polyaniline coatings can be considered as candidates to protect copper-rich (3 - 5%) aluminum alloys by avoiding the galvanic couple between re-deposited copper on the surface and the bulk alloy. The performance of the polyaniline films was verified by immersion tests up to 2.5 months. It was good with formation of some aluminum oxides due to electrolyte permeation so, in order to optimize the performance a coating formulation would content an isolation topcoat.Sociedade Brasileira de Química2003-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532003000100009Journal of the Brazilian Chemical Society v.14 n.1 2003reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532003000100009info:eu-repo/semantics/openAccessHuerta-Vilca,DomingoMoraes,Sandra R.Motheo,Artur J.eng2003-04-07T00:00:00Zoai:scielo:S0103-50532003000100009Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2003-04-07T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Electrosynthesized polyaniline for the corrosion protection of aluminum alloy 2024-T3
title Electrosynthesized polyaniline for the corrosion protection of aluminum alloy 2024-T3
spellingShingle Electrosynthesized polyaniline for the corrosion protection of aluminum alloy 2024-T3
Huerta-Vilca,Domingo
aluminum alloy
electrosynthesis
polyaniline
corrosion protection
title_short Electrosynthesized polyaniline for the corrosion protection of aluminum alloy 2024-T3
title_full Electrosynthesized polyaniline for the corrosion protection of aluminum alloy 2024-T3
title_fullStr Electrosynthesized polyaniline for the corrosion protection of aluminum alloy 2024-T3
title_full_unstemmed Electrosynthesized polyaniline for the corrosion protection of aluminum alloy 2024-T3
title_sort Electrosynthesized polyaniline for the corrosion protection of aluminum alloy 2024-T3
author Huerta-Vilca,Domingo
author_facet Huerta-Vilca,Domingo
Moraes,Sandra R.
Motheo,Artur J.
author_role author
author2 Moraes,Sandra R.
Motheo,Artur J.
author2_role author
author
dc.contributor.author.fl_str_mv Huerta-Vilca,Domingo
Moraes,Sandra R.
Motheo,Artur J.
dc.subject.por.fl_str_mv aluminum alloy
electrosynthesis
polyaniline
corrosion protection
topic aluminum alloy
electrosynthesis
polyaniline
corrosion protection
description Adherent polyaniline films on aluminum alloy 2024-T3 have been prepared by electrodeposition from aniline containing oxalic acid solution. The most appropriate method to prepare protective films was a successive galvanostatic deposition of 500 seconds. With this type of film, the open circuit potential of the coating shifted around 0.065V vs. SCE compared to the uncoated alloy. The polyaniline coatings can be considered as candidates to protect copper-rich (3 - 5%) aluminum alloys by avoiding the galvanic couple between re-deposited copper on the surface and the bulk alloy. The performance of the polyaniline films was verified by immersion tests up to 2.5 months. It was good with formation of some aluminum oxides due to electrolyte permeation so, in order to optimize the performance a coating formulation would content an isolation topcoat.
publishDate 2003
dc.date.none.fl_str_mv 2003-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532003000100009
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532003000100009
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-50532003000100009
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Journal of the Brazilian Chemical Society v.14 n.1 2003
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv ||office@jbcs.sbq.org.br
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