Influence of Al and Y content on the oxidation resistance of CrAlYN protective coatings for high temperature applications: New insights about the Y role

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dc.contributor.authorRojas, T. C.
dc.contributor.authorDomínguez-Meister, S.
dc.contributor.authorBrizuela, M.
dc.contributor.authorSánchez-López, J. C.
dc.contributor.institutionINGENIERÍA DE SUPERFICIES
dc.date.accessioned2024-07-24T12:11:30Z
dc.date.available2024-07-24T12:11:30Z
dc.date.issued2019-01-30
dc.descriptionPublisher Copyright: © 2018 Elsevier B.V.
dc.description.abstractCrAlYN hard coatings with two different average Al contents: ∼16 at.% and ∼25 at.%, and Y concentration varying between 1.2 and 5.7 at.% were deposited by direct current reactive magnetron co-sputtering of mixed Cr-Al and Y targets on commercial M2 steel substrates. The samples were heated to 1000 °C in air during 2 h to study their oxidation resistance and thermal stability. The Y content is critical and the coatings present different behaviour depending on the Al content. The best oxidation resistance and thermal stability are obtained for the coating with ∼16 at.% Al and 3.4 at.% Y. The initial film microstructure and the cubic phase (fcc-CrAlN) were retained, and a thin (Cr,Al)2O3 oxide protective scale was formed. At lower Y content (1.2 at.%) iron, from the substrate crosses the coating, while a higher content (4.6 at.%) avoided the iron diffusion at the expense of a thicker oxide scale with new oxide phases. The coatings with higher Al content (∼25 at. %) were not thermally stable at 1000 °C. A good oxidation resistance was obtained for 2.6 at.% of Y although new phases (hcp-AlN and Cr-Fe) were formed. Higher amount of yttrium (∼5.7 at. %) led to the complete oxidation of the coating.en
dc.description.sponsorshipEuropean Regional Development Funds program (EU-FEDER) and Spanish Ministry of Economy, Industry and Competitiveness (projects n° MAT2015-65539-P and MAT2015-69035-REDC), and CSIC (201560E013) are acknowledged for financial support. The lamellae preparation was conducted in the ‘Laboratorio de Microscopias Avanzadas’ at ‘Instituto de Nanociencia de Aragón-Universidad de Zaragoza’. Authors acknowledge the LMA-INA for offering access to their instruments and expertise. European Regional Development Funds program ( EU-FEDER ) and Spanish Ministry of Economy, Industry and Competitiveness (projects n° MAT2015-65539-P and MAT2015-69035-REDC ), and CSIC ( 201560E013 ) are acknowledged for financial support. The lamellae preparation was conducted in the ‘Laboratorio de Microscopias Avanzadas’ at ‘Instituto de Nanociencia de Aragón-Universidad de Zaragoza’. Authors acknowledge the LMA-INA for offering access to their instruments and expertise.
dc.description.statusPeer reviewed
dc.format.extent10
dc.identifier.citationRojas , T C , Domínguez-Meister , S , Brizuela , M & Sánchez-López , J C 2019 , ' Influence of Al and Y content on the oxidation resistance of CrAlYN protective coatings for high temperature applications : New insights about the Y role ' , Journal of Alloys and Compounds , vol. 773 , pp. 1172-1181 . https://doi.org/10.1016/j.jallcom.2018.09.280
dc.identifier.doi10.1016/j.jallcom.2018.09.280
dc.identifier.issn0925-8388
dc.identifier.urihttps://hdl.handle.net/11556/4191
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85054171387&partnerID=8YFLogxK
dc.language.isoeng
dc.relation.ispartofJournal of Alloys and Compounds
dc.relation.projectIDEU-FEDER
dc.relation.projectIDConsejo Superior de Investigaciones Científicas, CSIC, 201560E013
dc.relation.projectIDComisión Sectorial de Investigación Científica, CSIC
dc.relation.projectIDMinisterio de Economía, Industria y Competitividad, Gobierno de España, MINECO, MAT2015-69035-REDC-MAT2015-65539-P
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subject.keywordsHigh temperature corrosion
dc.subject.keywordsNitride materials
dc.subject.keywordsRare earth elements
dc.subject.keywordsSputteered films
dc.subject.keywordsTransmision electron microscopy techniques
dc.subject.keywordsMechanics of Materials
dc.subject.keywordsMechanical Engineering
dc.subject.keywordsMetals and Alloys
dc.subject.keywordsMaterials Chemistry
dc.titleInfluence of Al and Y content on the oxidation resistance of CrAlYN protective coatings for high temperature applications: New insights about the Y roleen
dc.typejournal article
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