Efeito da selagem hidrotérmica com adição de íons Ce (III) na proteção à corrosão da liga de alumínio AA7475-T761 anodizada em banho ácido tartárico-sulfúrico

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dc.contributor.authorALMEIDA, THALLIS L.
dc.contributor.authorQUEIROZ, FERNANDA M.
dc.contributor.authorTERADA, MAYSA
dc.contributor.authorCOSTA, ISOLDA
dc.contributor.authorCAPELOSSI, VERA R.
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.accessioned2017-03-24T17:04:04Z
dc.date.available2017-03-24T17:04:04Z
dc.date.evento16-20 de maio, 2016pt_BR
dc.description.abstractThe aluminum alloys of series 7XXX have excellent mechanical properties combined with low density and are often used in the aeronautic industry. However, their susceptibility to localized corrosion requires the use of protective coatings to ensure their long-term life. In the aircraft industry, the anodization process is an effective corrosion control method. Besides, the anodized layer sealing treatment of parts that are not used with coatings, provide further protection. However, both processes, anodization and sealing, generally employ baths containing Cr (VI) ions. These are highly toxic to the environment and carcinogenic. In this work, the AA7475-T761 alloy was anodized in a solution of tartaric-sulfuric acid (TSA) and then the anodic layer was hydrothermally sealed in aqueous solutions, either with or without the addition of Ce (III) ions. The effect of sealing time on the corrosion protection of the anodic layer was investigated for periods of sealing corresponding to 2.5 min, 5 min, 7.5 min and 10 min. The corrosion resistance of the anodized alloy samples was evaluated by electrochemical impedance spectroscopy (EIS) as a function of exposure time to a sodium chloride electrolyte. Higher impedances were associated with anodic layers hydrothermally sealed for 7.5 min and 10 min in Ce (III) ions containing solution. Surface observation was carried out by scanning electron microscopy (SEM) and the results indicated that hydrothermal treatments in solution with Ce (III) ions leads to anodic layers with decreased porosity.pt_BR
dc.event.siglaINTERCORRpt_BR
dc.format.extent1-13pt_BR
dc.identifier.citationALMEIDA, THALLIS L.; QUEIROZ, FERNANDA M.; TERADA, MAYSA; COSTA, ISOLDA; CAPELOSSI, VERA R. Efeito da selagem hidrotérmica com adição de íons Ce (III) na proteção à corrosão da liga de alumínio AA7475-T761 anodizada em banho ácido tartárico-sulfúrico. 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>Anais...</b> p. 1-13. Disponível em: http://repositorio.ipen.br/handle/123456789/27320.
dc.identifier.orcidhttps://orcid.org/0000-0002-4987-3334
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/27320
dc.local.eventoBúzios, RJpt_BR
dc.publisherRio de Janeiro, RJ: ABRACOpt_BR
dc.rightsopenAccesspt_BR
dc.subjectaluminium alloys
dc.subjectanodization
dc.subjectelectrochemical coating
dc.subjectsealing materials
dc.subjecthydrothermal systems
dc.subjecttartaric acid
dc.subjectsulfuric acid
dc.subjectcerium oxides
dc.titleEfeito da selagem hidrotérmica com adição de íons Ce (III) na proteção à corrosão da liga de alumínio AA7475-T761 anodizada em banho ácido tartárico-sulfúricopt_BR
dc.typeResumo de eventos científicospt_BR
dspace.entity.typePublication
ipen.autorISOLDA COSTA
ipen.autorMAYSA TERADA
ipen.autorFERNANDA MARTINS QUEIROZ
ipen.codigoautor429
ipen.codigoautor3494
ipen.codigoautor2876
ipen.contributor.ipenauthorISOLDA COSTA
ipen.contributor.ipenauthorMAYSA TERADA
ipen.contributor.ipenauthorFERNANDA MARTINS QUEIROZ
ipen.date.recebimento17-03pt_BR
ipen.event.datapadronizada2016pt_BR
ipen.identifier.ipendoc23664pt_BR
ipen.notas.internasAnaispt_BR
ipen.type.genreResumo
relation.isAuthorOfPublication952cc9fe-41a5-443f-b21a-316edc344ec8
relation.isAuthorOfPublicationba3269a4-b2b8-447c-b718-f93d2a9872a3
relation.isAuthorOfPublicationf3017dee-a8d7-4323-9b8b-947a0e38b0a2
relation.isAuthorOfPublication.latestForDiscoveryf3017dee-a8d7-4323-9b8b-947a0e38b0a2
sigepi.autor.atividadeQUEIROZ, FERNANDA M.:2876:730:Npt_BR
sigepi.autor.atividadeTERADA, MAYSA:3494:730:Npt_BR
sigepi.autor.atividadeCOSTA, ISOLDA:429:730:Npt_BR
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