Influence of iron addition on the microstructure and the electrochemical corrosion of Al-Zn-Mg alloys

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dc.contributor.authorBenedetti, Assis Vicente [UNESP]
dc.contributor.authorCabot, P. L.
dc.contributor.authorGarrido, J. A.
dc.contributor.authorMoreira, A. H.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Barcelona
dc.contributor.institutionUFC
dc.date.accessioned2014-05-20T14:17:54Z
dc.date.available2014-05-20T14:17:54Z
dc.date.issued2001-03-01
dc.description.abstractThe effect of Fe addition on the microstructural properties and the corrosion resistance of Al-Zn-Mg alloys submitted to different heat treatments (cast, annealed and aged), has been studied in chloride solutions using optical microscopy (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray (EDX), cyclic polarization (CP) and open circuit potential (o.c.p.) measurements. The presence of 0.3% Fe in the alloy limited the growth of the MgZn2 precipitates, both in the annealed and in the quenched specimens. No effect of Cr on the grain size in the presence of Fe was found because of the accumulation of Cr in the Fe-rich particles. Fe in the Al-Zn-Mg alloys also made them more susceptible to pitting. Pitting occurred mainly near the Fe-rich particles both, under o.c.p. conditions in O-2-saturated solutions and during the CP.en
dc.description.affiliationUNESP, Inst Quim, Dept Fisicoquim, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUniv Barcelona, Fac Quim, Dept Quim Fis, LCTEM, E-08028 Barcelona, Spain
dc.description.affiliationUFC, Dept Quim Analit & Fisicoquim, BR-60451970 Fortaleza, Ceara, Brazil
dc.description.affiliationUnespUNESP, Inst Quim, Dept Fisicoquim, BR-14801970 Araraquara, SP, Brazil
dc.format.extent293-300
dc.identifierhttp://dx.doi.org/10.1023/A:1017566002951
dc.identifier.citationJournal of Applied Electrochemistry. Dordrecht: Kluwer Academic Publ, v. 31, n. 3, p. 293-300, 2001.
dc.identifier.doi10.1023/A:1017566002951
dc.identifier.issn0021-891X
dc.identifier.urihttp://hdl.handle.net/11449/25365
dc.identifier.wosWOS:000167858900005
dc.language.isoeng
dc.publisherKluwer Academic Publ
dc.relation.ispartofJournal of Applied Electrochemistry
dc.relation.ispartofjcr2.262
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectaluminium-based alloyspt
dc.subjectcorrosionpt
dc.subjectheat treatmentpt
dc.titleInfluence of iron addition on the microstructure and the electrochemical corrosion of Al-Zn-Mg alloysen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights
dcterms.rightsHolderKluwer Academic Publ
unesp.author.lattes1769008264876945[1]
unesp.author.orcid0000-0002-0243-6639[1]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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Artigos - Físico Química - IQ