Influence of rare earth oxide coatings on oxidation behaviour of Fe-20Cr alloys

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dc.contributor.authorFERNANDES, S.M.C.pt_BR
dc.contributor.authorRAMANATHAN, L.V.pt_BR
dc.coverageInternacionalpt_BR
dc.date.accessioned2014-07-30T17:22:39Zpt_BR
dc.date.accessioned2014-07-30T18:59:07Z
dc.date.available2014-07-30T17:22:39Zpt_BR
dc.date.available2014-07-30T18:59:07Z
dc.date.issued2000pt_BR
dc.description.abstractThis paper discusses the influence of coatings of praseodymium, dysprosium, and yttrium oxide gels on the oxidation behaviour of Fe-20Cr alloys. The morphology of the coatings was found to vary with the rare earth (RE) element used. The oxidation rates of Fe-20Cr specimens with all three RE oxide coatings were significantly lower than that of the uncoated alloy. The extent of influence on oxidation rate decreased in the following order: Pr, Dy, Y. The scale formed in the presence of RE oxides was a very thin, adherent chromia scale. Micrographic evidence of RE oxides in the chromia scales was found, further confirming the mechanism of scale growth in the presence of REs. Chromium ion diffusion is hindered by RE oxide coatings, making oxygen ion diffusion dominant. A direct correlation between RE ion radius and the extent of influence on chromia growth at 1000 °C has been found.
dc.format.extent327-332pt_BR
dc.identifier.citationFERNANDES, S.M.C.; RAMANATHAN, L.V. Influence of rare earth oxide coatings on oxidation behaviour of Fe-20Cr alloys. <b>Surface Engineering</b>, v. 16, n. 4, p. 327-332, 2000. DOI: <a href="https://dx.doi.org/10.1179/026708400101517323">10.1179/026708400101517323</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/6211.
dc.identifier.doi10.1179/026708400101517323
dc.identifier.fasciculo4pt_BR
dc.identifier.issn0267-0844pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-4822-8840
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/6211pt_BR
dc.identifier.vol16pt_BR
dc.relation.ispartofSurface Engineeringpt_BR
dc.rightsclosedAccessen
dc.subjectrare earthspt_BR
dc.subjectsurface coatingpt_BR
dc.subjectoxidationpt_BR
dc.subjectchromium alloyspt_BR
dc.subjectchemical reactorspt_BR
dc.subjectiron alloyspt_BR
dc.subjectsol-gel processpt_BR
dc.titleInfluence of rare earth oxide coatings on oxidation behaviour of Fe-20Cr alloyspt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorLALGUDI VENKATARAMAN RAMANATHAN
ipen.autorSTELA MARIA CRISTINA FERNANDES
ipen.codigoautor95
ipen.codigoautor3822
ipen.contributor.ipenauthorLALGUDI VENKATARAMAN RAMANATHAN
ipen.contributor.ipenauthorSTELA MARIA CRISTINA FERNANDES
ipen.date.recebimento10-03pt_BR
ipen.identifier.ipendoc14573pt_BR
ipen.identifier.iwosWoSpt_BR
ipen.type.genreArtigo
relation.isAuthorOfPublication8e95d525-c559-413e-ac38-1e26a8fd67a3
relation.isAuthorOfPublication2c396248-be1d-4b23-8f62-02220e1cc3c2
relation.isAuthorOfPublication.latestForDiscovery2c396248-be1d-4b23-8f62-02220e1cc3c2
sigepi.autor.atividadeFERNANDES, S.M.C.:3822:-1:Spt_BR
sigepi.autor.atividadeRAMANATHAN, L.V.:95:-1:Npt_BR

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