Microstructural investigation of the anodized (TSA) Al-Li alloys sealed in a cerium solution

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dc.contributor.authorTERADA, M.
dc.contributor.authorQUEIROZ, F.M.
dc.contributor.authorAYUSSO, V.H.
dc.contributor.authorASTARITA, A.
dc.contributor.authorCOSTA, I.
dc.coverageInternacionalpt_BR
dc.creator.eventoINTERNATIONAL CONFERENCE ON SURFACE MODIFICATION TECHNOLOGIES, 30thpt_BR
dc.date.accessioned2017-03-24T17:31:31Z
dc.date.available2017-03-24T17:31:31Z
dc.date.eventoJune 29 - July 1, 2016pt_BR
dc.description.abstractThe AA2198 is a third generation of Al-Li alloy developed for use in the aircraft industry. It is highly susceptible to localized corrosion and it is usually protected by anodizing. Sealing treatments of the anodic layer provide further protection. In this study, samples of the AA2198 alloy were anodized in tartaric sulfuric acid (TSA) solution and subsequently sealed, either in boiling water or in a solution with cerium ions. The surface of the treated samples was investigated by Field Emission Gun-Scanning Electron Microscopy and X-ray energy dispersive analysis. Defects were found in the anodic layer due to the complex microstructure of the AA2198 alloy. The corrosion resistance of the anodized and sealed samples was studied by electrochemical impedance spectroscopy in 0.5 mol.L-1 NaCl solution and compared to that of anodized and unsealed samples. EIS results showed that the sealing treatment in cerium solutions resulted in increase in impedance with time of immersion. Surface observation and EDX analysis showed increase in cerium content with time of test at the defects in the anodic layer sealed in cerium containing solutions and the increasing blockage of the defects in this layer. The EIS results also showed that the impedance associated to this type of samples increased with time whereas it decreased for sealed samples in boiling water. The surface observation and EIS responses indicated a healing process associated to sealing in the cerium solution.pt_BR
dc.event.siglaSMTpt_BR
dc.identifier.citationTERADA, M.; QUEIROZ, F.M.; AYUSSO, V.H.; ASTARITA, A.; COSTA, I. Microstructural investigation of the anodized (TSA) Al-Li alloys sealed in a cerium solution. In: INTERNATIONAL CONFERENCE ON SURFACE MODIFICATION TECHNOLOGIES, 30th, June 29 - July 1, 2016, Milan, Italy. <b>Abstract...</b> Disponível em: http://repositorio.ipen.br/handle/123456789/27323.
dc.identifier.orcidhttps://orcid.org/0000-0002-4987-3334
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/27323
dc.local.eventoMilan, Italypt_BR
dc.rightsopenAccesspt_BR
dc.titleMicrostructural investigation of the anodized (TSA) Al-Li alloys sealed in a cerium solutionpt_BR
dc.typeResumo de eventos científicospt_BR
dspace.entity.typePublication
ipen.autorISOLDA COSTA
ipen.autorVICTOR HUGO AYUSSO
ipen.autorFERNANDA MARTINS QUEIROZ
ipen.codigoautor429
ipen.codigoautor12117
ipen.codigoautor2876
ipen.contributor.ipenauthorISOLDA COSTA
ipen.contributor.ipenauthorVICTOR HUGO AYUSSO
ipen.contributor.ipenauthorFERNANDA MARTINS QUEIROZ
ipen.date.recebimento17-03pt_BR
ipen.event.datapadronizada2016pt_BR
ipen.identifier.ipendoc23667pt_BR
ipen.notas.internasAbstractpt_BR
ipen.type.genreResumo
relation.isAuthorOfPublication952cc9fe-41a5-443f-b21a-316edc344ec8
relation.isAuthorOfPublication8a8ff5bc-1d83-42f6-97b7-105afdc58e33
relation.isAuthorOfPublicationf3017dee-a8d7-4323-9b8b-947a0e38b0a2
relation.isAuthorOfPublication.latestForDiscoveryf3017dee-a8d7-4323-9b8b-947a0e38b0a2
sigepi.autor.atividadeQUEIROZ, F.M.:2876:730:Npt_BR
sigepi.autor.atividadeAYUSSO, V.H.:12117:730:Npt_BR
sigepi.autor.atividadeCOSTA, I.:429:730:Npt_BR
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