EIS and Salt-Spray study of AA2524 anodized in tartaric-sulfuric acid bath and protected with hybrid sol–gel coating

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dc.contributor.authorCOSTENARO, HELLEN
dc.contributor.authorQUEIROZ, FERNANDA M.
dc.contributor.authorTERADA, MAYSA
dc.contributor.authorPAINT, YOANN
dc.contributor.authorRENAUD, ALEXIS
dc.contributor.authorOLIVIER, MARIE-GEORGE
dc.contributor.authorCOSTA, ISOLDA
dc.contributor.authorMELO, HERCILIO G. de
dc.coverageNacionalpt_BR
dc.creator.eventoCONGRESSO BRASILEIRO DE CORROSAO, 36.; INTERNATIONAL CORROSION MEETING, 6th; CONCURSO DE FOTOGRAFIA DE CORROSAO E DEGRADAÇAO DE MATERIAIS, 20.; EXPOSIÇAO DE TECNOLOGIAS PARA PREVENÇAO E CONTROLE DA CORROSAO, 36.pt_BR
dc.date.accessioned2017-03-24T17:11:24Z
dc.date.available2017-03-24T17:11:24Z
dc.date.evento16-20 de maio, 2016pt_BR
dc.description.abstractAA2524 is a relatively new brand of aluminum alloy designed to build lightweight structural components in aerospace industry. To be employed in aircrafts, high strength Al alloys need to be protected from corrosion by a robust protection system. One of the steps applied in the protection protocol is anodizing, which is known to greatly improve the corrosion resistance of Al alloys. In the present investigation, a sol-gel hybrid layer was applied as a post-treatment step for anodized AA2524 and the corrosion resistance of the system evaluated by means of EIS measurements and salt-spray tests. The anodizing process was performed in a tartaric-sulfuric acid (TSA) bath, which is more environmentally friendly than the traditional chromic acid anodizing baths, and the sol–gel solution was prepared by mixing tetraethoxysilane (TEOS) and 3-glycidyloxypropyl-trimethoxysilane (GPTMS) precursors in a solution with high water content. For comparison reasons, TSA anodized samples were also hydrothermally sealed in boiling deionized water. The results of both EIS and salt-spray tests demonstrated superior corrosion resistance for the anodized samples post-treated with the hybrid sol-gel layer. Electrical equivalent circuit fitting of the EIS data indicated that the hybrid sol-gel layer strongly hinders electrolyte penetration through the porous layer, better protecting the underlying substrate.pt_BR
dc.event.siglaINTERCORRpt_BR
dc.format.extent1-14pt_BR
dc.identifier.citationCOSTENARO, HELLEN; QUEIROZ, FERNANDA M.; TERADA, MAYSA; PAINT, YOANN; RENAUD, ALEXIS; OLIVIER, MARIE-GEORGE; COSTA, ISOLDA; MELO, HERCILIO G. de. EIS and Salt-Spray study of AA2524 anodized in tartaric-sulfuric acid bath and protected with hybrid sol–gel coating. In: CONGRESSO BRASILEIRO DE CORROSAO, 36.; INTERNATIONAL CORROSION MEETING, 6th; CONCURSO DE FOTOGRAFIA DE CORROSAO E DEGRADAÇAO DE MATERIAIS, 20.; EXPOSIÇAO DE TECNOLOGIAS PARA PREVENÇAO E CONTROLE DA CORROSAO, 36., 16-20 de maio, 2016, Búzios, RJ. <b>Proceedings...</b> p. 1-14. Disponível em: http://repositorio.ipen.br/handle/123456789/27321.
dc.identifier.orcidhttps://orcid.org/0000-0002-4987-3334
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/27321
dc.local.eventoBúzios, RJpt_BR
dc.publisherRio de Janeiro, RJ: ABRACOpt_BR
dc.rightsopenAccesspt_BR
dc.subjectaluminium alloys
dc.subjectsol-gel process
dc.subjectcoatings
dc.subjectcorrosion protection
dc.subjectanodization
dc.subjectsulfuric acid
dc.subjecttartaric acid
dc.titleEIS and Salt-Spray study of AA2524 anodized in tartaric-sulfuric acid bath and protected with hybrid sol–gel coatingpt_BR
dc.typeTexto completo de eventopt_BR
dspace.entity.typePublication
ipen.autorISOLDA COSTA
ipen.codigoautor429
ipen.contributor.ipenauthorISOLDA COSTA
ipen.date.recebimento17-03pt_BR
ipen.event.datapadronizada2016pt_BR
ipen.identifier.ipendoc23665pt_BR
ipen.notas.internasProceedingspt_BR
ipen.type.genreArtigo
relation.isAuthorOfPublication952cc9fe-41a5-443f-b21a-316edc344ec8
relation.isAuthorOfPublication.latestForDiscovery952cc9fe-41a5-443f-b21a-316edc344ec8
sigepi.autor.atividadeCOSTA, ISOLDA:429:730:Npt_BR
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