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Microstructure and mechanical properties of plasma spraying coatings from YSZ feedstocks comprising nano- and submicron-sized particles

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Microstructure and mechanical properties of plasma spraying coatings from YSZ feedstocks comprising nano- and submicron-sized particles

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dc.contributor.author Carpio, Pablo es_ES
dc.contributor.author Borrell Tomás, María Amparo es_ES
dc.contributor.author Salvador Moya, Mª Dolores es_ES
dc.contributor.author Gómez, Andres es_ES
dc.contributor.author Martínez, Eduardo es_ES
dc.contributor.author Sánchez, Enrique es_ES
dc.date.accessioned 2016-01-14T12:10:42Z
dc.date.available 2016-01-14T12:10:42Z
dc.date.issued 2015-04
dc.identifier.issn 0272-8842
dc.identifier.uri http://hdl.handle.net/10251/59885
dc.description.abstract Atmospheric plasma spraying (APS) is an attractive technique to obtain nanostructured coatings due to its versatility, simplicity and relatively low cost. However, nanoparticles cannot be fed into the plasma using conventional feeding systems, due to their low mass and poor flowability, and must be adequately reconstituted into sprayable micrometric agglomerates. In this work, nanostructured and submicron/nanostiuctured powders of yttria-stabilised zirconia (YSZ) were deposited using APS, with a view to obtaining high-performance thermal bather coatings (IBC). All powders were reconstituted by spray-drying from different solid loading suspensions, followed by a thermal treatment of the spray-dried granules to reduce agglomerate porosity and enhance powder sinterability. The reconstituted granules were characterised by XRD, SEM, pore sizing and flowability evaluation. The reconstituted feedstocks were successfully deposited onto metallic substrates by APS. A metallic bond coat was sprayed between the substrate and the ceramic layer. The coating microstructure, characterised by SEM, was formed by partially melted zones, which retained the initial powder microstructure, embedded in a fully melted matrix which acts as a binder. It was shown that feedstock characteristics which in turn are very dependent of starting suspension characteristics, in particular agglomerate density and primary particle size, impact on coating microstructure (porosity and amount of partially-melted areas). For this reason mechanical properties of coatings are also strongly affected by feeding powder characteristics. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved. es_ES
dc.description.sponsorship This work has been supported by the Spanish Ministry of Economy and Competitiveness (project MAT2012-38364-C03), by the Research Promotion Plan of the Universitat Jaume I, action 3.1 (ref. PREDOC/2009/10) and it has been co-funded by ERDF (European Regional Development Funds). The authors also acknowledge the SCIC of Valencia University for the FEG-SEM observations. Finally the Spanish Ministry of Science and Innovation for Juan de la Cierva contract (JCI-2011-10498) is also grateful. en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation Spanish Ministry of Economy and Competitiveness MAT2012-38364-C03 es_ES
dc.relation Research Promotion Plan of the Universitat Jaume I, action 3.1 PREDOC/2009/10 es_ES
dc.relation ERDF (European Regional Development Funds) es_ES
dc.relation Spanish Ministry of Science and Innovation JCI-2011-10498 es_ES
dc.relation.ispartof Ceramics International es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject YSZ coatings es_ES
dc.subject Atmospheric plasma spraying es_ES
dc.subject Reconstituted powders es_ES
dc.subject Thermal barrier coatings es_ES
dc.subject.classification CIENCIA DE LOS MATERIALES E INGENIERIA METALURGICA es_ES
dc.title Microstructure and mechanical properties of plasma spraying coatings from YSZ feedstocks comprising nano- and submicron-sized particles es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.ceramint.2014.11.106
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Mecánica y de Materiales - Departament d'Enginyeria Mecànica i de Materials es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto de Tecnología de Materiales - Institut de Tecnologia de Materials es_ES
dc.description.bibliographicCitation Carpio, P.; Borrell Tomás, MA.; Salvador Moya, MD.; Gómez, A.; Martínez, E.; Sánchez, E. (2015). Microstructure and mechanical properties of plasma spraying coatings from YSZ feedstocks comprising nano- and submicron-sized particles. Ceramics International. 41(3, Part A):4108-4117. doi:10.1016/j.ceramint.2014.11.106 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1016/j.ceramint.2014.11.106 es_ES
dc.description.upvformatpinicio 4108 es_ES
dc.description.upvformatpfin 4117 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 41 es_ES
dc.description.issue 3, Part A es_ES
dc.relation.senia 279743 es_ES


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