Electrochemical behaviour of thermally sprayed Cr3C2-NiCr coatings in 0.5 M H2SO4 media

dc.contributor.authorSuegama, P. H.
dc.contributor.authorFugivara, Cecilio Sadao [UNESP]
dc.contributor.authorBenedetti, Assis Vicente [UNESP]
dc.contributor.authorFernandez, J.
dc.contributor.authorDelgado, J.
dc.contributor.authorGuilemany, J. M.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Barcelona
dc.date.accessioned2014-05-20T14:18:04Z
dc.date.available2014-05-20T14:18:04Z
dc.date.issued2002-11-01
dc.description.abstractThe electrochemical behaviour of coated Cr3C2-NiCr steel in aerated 0.5 M H2SO4 solution was studied by means of electrochemical a.c. and d.c. measurements. A complete structural characterization of the coated steel before and after electrochemical tests was also carried out to access the corrosion mechanism of coated steel, electrolyte penetration through the coating, and to confirm the results obtained using electrochemical techniques. Two types of Cr3C2-NiCr coatings produced by a high velocity oxy-fuel spraying system (HVOF) were studied. Differences between coated steels are related to the spraying parameters reflecting their behaviour against corrosion phenomena. The electrochemical behaviour of the coated steel was strongly influenced by porosity and the presence of microcracks in the coating. Once the electrolyte reaches the steel substrate, it corrodes in a galvanic manner resulting in coating detachment from the steel.en
dc.description.affiliationUniv Estadual Paulista, UNESP, Inst Quim, Dept Quim Fis, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUniv Barcelona, Dept Engn Quim & Met, CPT Thermal Spray Ctr, E-08028 Barcelona, Spain
dc.description.affiliationUnespUniv Estadual Paulista, UNESP, Inst Quim, Dept Quim Fis, BR-14801970 Araraquara, SP, Brazil
dc.format.extent1287-1295
dc.identifierhttp://dx.doi.org/10.1023/A:1021654628416
dc.identifier.citationJournal of Applied Electrochemistry. Dordrecht: Kluwer Academic Publ, v. 32, n. 11, p. 1287-1295, 2002.
dc.identifier.doi10.1023/A:1021654628416
dc.identifier.issn0021-891X
dc.identifier.lattes2797127887030838
dc.identifier.urihttp://hdl.handle.net/11449/25437
dc.identifier.wosWOS:000179881800014
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.subjectcorrosionpt
dc.subjectCr3C2-NiCr coatingpt
dc.subjectelectrochemical techniquespt
dc.subjectHVOFpt
dc.subjectsteel protectionpt
dc.subjectthermal sprayingpt
dc.titleElectrochemical behaviour of thermally sprayed Cr3C2-NiCr coatings in 0.5 M H2SO4 mediaen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights
dcterms.rightsHolderKluwer Academic Publ
unesp.author.lattes2797127887030838[2]
unesp.author.lattes1769008264876945[3]
unesp.author.orcid0000-0002-0243-6639[3]
unesp.author.orcid0000-0002-2288-2601[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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