The effect of surface pretreatment on the corrosion behaviour of silanated AA2198???T851 Al???Cu???Li alloy

dc.creatorDONATUS, UYIME
dc.creatorKLUMPP, RAFAEL E.
dc.creatorMOGILI, NAGA V.V.
dc.creatorANTUNES, RENATO A.
dc.creatorMILAGRE, MARIANA X.
dc.creatorCOSTA, ISOLDA
dc.date2019
dc.date2019-08-08T12:23:11Z
dc.date2019-08-08T12:23:11Z
dc.date.accessioned2023-09-28T14:11:23Z
dc.date.available2023-09-28T14:11:23Z
dc.identifier0142-2421
dc.identifierhttp://repositorio.ipen.br/handle/123456789/30041
dc.identifier2
dc.identifier51
dc.identifier10.1002/sia.6584
dc.identifier0000-0002-4987-3334
dc.identifier22.956
dc.identifier52.00
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/9000279
dc.descriptionThe corrosion behaviour of silanated AA2198???T851 alloy substrates with and with no manufacturing???process induced near???surface deformed layer (MPI???NSDL) has been investigated. Two methods (alkaline etching + desmutting and mechanical polishing) were employed in removing the MPI???NSDL. Silanization was performed using 2???bistriethoxysilylethane. Electrochemical impedance spectroscopy (EIS), salt spray test, and microscopy techniques were employed in the investigation of the corrosion behaviours. The studies revealed that polishing appeared to be the best silanating pre???treatment (compared with degreasing and etching + desmutting) for the new generation AA2198???T851 Al???Cu???Li alloy, and this was reflected in the EIS spectra. The etched + desmutted and the degreased surface with MPI???NSDL did not respond well to silanization and presented more pitting sites per square millimeter. However, the severity of corrosion per pit was more on the polished sample compared with the other two. Also, the corrosion mechanisms were different for the three cases.
dc.descriptionFunda????o de Amparo ?? Pesquisa do Estado de S??o Paulo (FAPESP)
dc.descriptionFAPESP: 17/03095???3
dc.format275-289
dc.relationSurface and Interface Analysis
dc.rightsclosedAccess
dc.subjectcorrosion
dc.subjectaluminium alloys
dc.subjectcopper alloys
dc.subjectcorrosion protection
dc.subjectlithium alloys
dc.subjectsurface treatments
dc.subjectmicrostructure
dc.subjectsilanes
dc.subjectcorrosion resistant alloys
dc.titleThe effect of surface pretreatment on the corrosion behaviour of silanated AA2198???T851 Al???Cu???Li alloy
dc.typeArtigo de peri??dico
dc.coverageI


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