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Influence of processing route and yttria additions on the oxidation behavior of tungsten

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dc.affiliation.dptoUC3M. Departamento de Físicaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Materiales Nano-Estructurados y Multifuncionaleses
dc.contributor.authorMuñoz Castellanos, Ángel
dc.contributor.authorMonge Alcázar, Miguel Ángel
dc.contributor.authorCifuentes Cuéllar, Sandra Carolina
dc.contributor.authorPérez, P.
dc.date.accessioned2014-12-19T12:03:52Z
dc.date.available2014-12-19T12:03:52Z
dc.date.issued2011-10
dc.descriptionThis study is for: The Fifteenth International Conference on Fusion Reactor Materials (ICFRM-15) was held October 16–22, 2011, at the Charleston Marriott Hotel in Charleston, South Carolina (American United States).en
dc.description.abstractThe oxidation resistance in dry air of pure tungsten and tungsten reinforced with a dispersion of 0.6 wt.% Y₂O₃ nanoparticles has been evaluated between 873 and 1073 K, temperature range that divertor in fusion power plants should endure during long-term times in the case of loss of coolant accident and/or air ingress in the vessel. Both materials were prepared by a powder metallurgy route involving hot isostatic pressing of ball milled tungsten powders and tungsten with dispersed Y₂O₃ nanoparticles. The results have been compared with those of pure tungsten processed by conventional techniques. Thermogravimetric tests at 873 K revealed that the processing route as well as yttria addition considerably affected the oxidation resistance of pure tungsten. Mass gain of W-0.6Y₂O₃ at 873 K was five and two times lower than that of pure tungsten prepared by conventional processing techniques and by powder metallurgy, respectively. This different behavior was related to changes in the structure and composition of the oxide scale. Above 873 K, the kinetics were significantly accelerated for all materials due to the development of a non-protective oxide scale from the earliest oxidation stages, although the kinetics of Y₂O₃-containing material were still the slowest, specially at 973 K. It was analyzed how yttria additions modify the oxidation mechanism of tungsten.en
dc.description.sponsorshipConsejería de Educación de la Comunidad de Madrid through the program ESTRUMAT-CM S2009MAT-1585 and by the Ministerio de Innovación y Ciencia (Project ENE2008-06403-C06-04). The additional subvention from EURATOM/CIEMAT association through contract EFDA WP11-MAT-WWALLOY.en
dc.description.statusPublicado
dc.format.extent5
dc.format.mimetypeapplication/pdf
dc.identifier.bibliographicCitationJournal of Nuclear Materials, 442 (2013), issues 1-3, Supplement 1, November, pp.S214-S218en
dc.identifier.doi10.1016/j.jnucmat.2012.12.034
dc.identifier.issn0022-3115
dc.identifier.publicationfirstpage214
dc.identifier.publicationissue1-3
dc.identifier.publicationlastpage218
dc.identifier.publicationtitleJournal of Nuclear Materialsen
dc.identifier.publicationvolume442
dc.identifier.urihttps://hdl.handle.net/10016/19808
dc.identifier.uxxiCC/0000022081
dc.language.isoeng
dc.publisherElsevier
dc.relation.eventdate2011-Octubre-16-22es
dc.relation.eventnumber15
dc.relation.eventplaceEstados Unidos de Américaes
dc.relation.eventtitleInternational Conference on Fusion Reactor Materials (ICFRM-15)en
dc.relation.projectIDComunidad de Madrid. S2009/MAT-1585/ESTRUMATes
dc.relation.projectIDGobierno de España. ENE2008-06403-C06-04
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.jnucmat.2012.10.033
dc.rights© 2012 Elsevier B.V.
dc.rights.accessRightsopen access
dc.subject.ecienciaFísicaes
dc.subject.ecienciaMaterialeses
dc.subject.otherPure tungstenen
dc.subject.otherDegrees-Cen
dc.subject.otherKineticsen
dc.subject.otherAlloysen
dc.titleInfluence of processing route and yttria additions on the oxidation behavior of tungstenen
dc.typeconference paper*
dc.type.hasVersionAM*
dspace.entity.typePublication
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