Role of y in the oxidation resistance of CrAlYN coatings

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dc.contributor.authorDomínguez-Meister, S.
dc.contributor.authorEl Mrabet, S.
dc.contributor.authorEscobar-Galindo, R.
dc.contributor.authorMariscal, A.
dc.contributor.authorJiménez De Haro, M. C.
dc.contributor.authorJusto, A.
dc.contributor.authorBrizuela, M.
dc.contributor.authorRojas, T. C.
dc.contributor.authorSánchez-López, J. C.
dc.contributor.institutionINGENIERÍA DE SUPERFICIES
dc.date.issued2015-10-30
dc.descriptionPublisher Copyright: © 2015 Elsevier B.V. All rights reserved.
dc.description.abstractCrAlYN coatings with different aluminum (4-12 at.%) and yttrium (2-5 at.%) contents are deposited by d.c. reactive magnetron sputtering on silicon and M2 steel substrates using metallic targets and Ar/N 2 mixtures. The influence of the nanostructure and chemical elemental distribution on the oxidation resistance after heating in air at 1000 °C is studied by means of cross-sectional scanning electron microscopy (X-SEM), energy dispersive X-ray analysis (EDX), X-ray diffraction (XRD) and glow discharge optical emission spectroscopy (GD-OES). The sequential exposure to the metallic targets during the synthesis leads to a multilayer structure where concentration of metallic elements (Cr, Al and Y) is changing periodically. A good oxidation resistance is observed when Al- and Y-rich regions are separated by well-defined CrN layers, maintaining crystalline coherence along the columnar structure. This protective behavior is independent of the type of substrate and corresponds to the formation of a thin mixed (Al, Cr)-oxide scale that protects the film underneath. The GD-OES and XRD analysis have demonstrated that Y acts as a reactive element, blocking the Fe and C atoms diffusion from the steel and favoring higher Al/Cr ratio in the passivation layer after heating. The coating with Y content around 4 at.% exhibited the best performance with a thinner oxide scale, a delay in the CrN decomposition and transformation to Cr 2 N, and a more effective Fe and C blocking.en
dc.description.sponsorshipThe authors are grateful to the Spanish Ministry of Economy and Competitiveness (MINECO) (projects No. MAT2007-66881, MAT2010-21597, MAT2011-29074 and Consolider FUNCOAT CSD2008-00023), Junta de Andalucía (TEP217) and I3P programme of CSIC for financial support.
dc.description.statusPeer reviewed
dc.format.extent8
dc.identifier.citationDomínguez-Meister , S , El Mrabet , S , Escobar-Galindo , R , Mariscal , A , Jiménez De Haro , M C , Justo , A , Brizuela , M , Rojas , T C & Sánchez-López , J C 2015 , ' Role of y in the oxidation resistance of CrAlYN coatings ' , Applied Surface Science , vol. 353 , pp. 504-511 . https://doi.org/10.1016/j.apsusc.2015.06.099
dc.identifier.doi10.1016/j.apsusc.2015.06.099
dc.identifier.issn0169-4332
dc.identifier.otherresearchoutputwizard: 11556/179
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=84941961808&partnerID=8YFLogxK
dc.language.isoeng
dc.relation.ispartofApplied Surface Science
dc.relation.projectIDMinisterio de Economía y Competitividad, MINECO, MAT2007-66881-MAT2010-21597-CSD2008-00023-MAT2011-29074
dc.relation.projectIDConsejo Superior de Investigaciones Científicas, CSIC
dc.relation.projectIDJunta de Andalucía, TEP217
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subject.keywordsCrAlN
dc.subject.keywordsMagnetron sputtering
dc.subject.keywordsMechanism
dc.subject.keywordsOxidation resistance
dc.subject.keywordsYttrium
dc.subject.keywordsCrAlN
dc.subject.keywordsMagnetron sputtering
dc.subject.keywordsOxidation resistance
dc.subject.keywordsMechanism
dc.subject.keywordsYttrium
dc.subject.keywordsCondensed Matter Physics
dc.subject.keywordsSurfaces and Interfaces
dc.subject.keywordsSurfaces, Coatings and Films
dc.subject.keywordsFunding Info
dc.subject.keywordsMINECO: MAT2007-66881 MAT2010-21597 MAT2011-29074 Consolider FUNCOAT CSD2008-00023. _x000D_ Junta de Andalucia :TEP217. I3P programme of CSIC
dc.subject.keywordsMINECO: MAT2007-66881 MAT2010-21597 MAT2011-29074 Consolider FUNCOAT CSD2008-00023. _x000D_ Junta de Andalucia :TEP217. I3P programme of CSIC
dc.titleRole of y in the oxidation resistance of CrAlYN coatingsen
dc.typejournal article
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