Influence of chromate, molybdate and tungstate on pit formation in chloride medium

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:21:40Z
dc.date.accessioned2022-10-05T17:58:23Z
dc.date.available2014-05-27T11:21:40Z
dc.date.available2022-10-05T17:58:23Z
dc.date.created2014-05-27T11:21:40Z
dc.date.issued2005-11-15
dc.identifierApplied Surface Science, v. 252, n. 4, p. 1117-1122, 2005.
dc.identifier0169-4332
dc.identifierhttp://hdl.handle.net/11449/68492
dc.identifier10.1016/j.apsusc.2005.02.030
dc.identifier2-s2.0-26444527354
dc.identifier7539097260489375
dc.identifier8799191078451467
dc.identifier0778348300548797
dc.identifier0000-0001-7897-1905
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/3918025
dc.description.abstractIt has been characterized and evaluated the 2024-T351 and 7050-T7451 aluminum alloys pitting corrosion in naturally aerated chloride aqueous solutions containing chromate, molybdate and tungstate. It has been carried out electrochemical and non-electrochemical immersion corrosion tests accompanied by surface metallography analysis using an optical microscopy. Chromate for the two alloys and in molybdate for 7050 has corrosion inhibiting effects, whereas tungstate promotes the pitting corrosion for these alloys. Quantitative surface analysis upon the alloys after immersion has indicated that pits are predominantly conical or quasi-conical and irregular. In general, pits have been wider than deep and the widest have been also the deepest. Despite inhibitor presence, when pits have been nucleated, they grow with the same intensity. © 2005 Elsevier B.V. All rights reserved.
dc.languageeng
dc.relationApplied Surface Science
dc.relation4.439
dc.relation1,093
dc.rightsAcesso restrito
dc.sourceScopus
dc.subjectAircraft alloys
dc.subjectAluminum alloys
dc.subjectImage analysis
dc.subjectPitting corrosion
dc.subjectChromates
dc.subjectElectrochemistry
dc.subjectMetallography
dc.subjectMolybdenum compounds
dc.subjectNucleation
dc.subjectSurface phenomena
dc.subjectTungsten compounds
dc.subjectCorrosion tests
dc.subjectSurface analysis
dc.subjectCorrosion protection
dc.titleInfluence of chromate, molybdate and tungstate on pit formation in chloride medium
dc.typeArtigo


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