Corrosion protection of electrogalvanized steel by surface treatments containing cerium and niobium compounds

dc.creatorFERREIRA JUNIOR, J.M.
dc.creatorSOUZA, K.P.
dc.creatorROSSI, J.L.
dc.creatorCOSTA, I.
dc.creatorTRINDADE, G.F.
dc.creatorTAMACHUK, C.R.
dc.date2016
dc.date2016-11-10T13:17:41Z
dc.date2016-11-10T13:17:41Z
dc.date.accessioned2023-09-28T13:31:18Z
dc.date.available2023-09-28T13:31:18Z
dc.identifier1452-3981
dc.identifierhttp://repositorio.ipen.br/handle/123456789/26779
dc.identifier8
dc.identifier11
dc.identifier10.20964/2016.08.19
dc.identifier36.207
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8997074
dc.descriptionIn this work, new surface treatments for the corrosion protection of electrogalvanized steel have been evaluated. The aim was to search for chromium free treatments to replace those based on hexavalent chromium. Surface films were obtained by immersion in solutions containing salts for increasing conductivity, coating forming salts (i.e. cerium nitrate and niobium oxalate ammonium) and an organic complexing agent (2-butyne 1,4 diol propoxylate). The morphology and composition of the surface films formed were characterized by scanning electron microscopy (SEM) and X-ray Photoelectron Spectroscopy (XPS). The corrosion resistance of the treated surfaces was evaluated by electrochemical impedance spectroscopy (EIS) and their chemical composition was characterized by XPS. It was found that it consists of an organic coating with cerium incorporated. The electrochemical results suggested surface film increased the corrosion resistance of the electrogalvanized steel and similar protection properties to that of a chromate coating were indicated
dc.format6655-6672
dc.relationInternational Journal of Electrochemical Science
dc.rightsopenAccess
dc.subjectsteels
dc.subjectcorrosion protection
dc.subjectcoatings
dc.subjectcerium
dc.subjectniobium
dc.subjectsurface treatments
dc.subjectcerium compounds
dc.subjectniobium compounds
dc.subjectevaluation
dc.subjectscanning electron microscopy
dc.subjectx-ray photoelectron spectroscopy
dc.titleCorrosion protection of electrogalvanized steel by surface treatments containing cerium and niobium compounds
dc.typeArtigo de peri??dico
dc.coverageI


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