Show simple item record

dc.contributor.authorVicent Cabedo, Mónica
dc.contributor.authorBannier, Emilie
dc.contributor.authorMoreno, Rodrigo
dc.contributor.authorSalvador Moya, María Dolores
dc.contributor.authorSánchez-Vilches, Enrique
dc.date.accessioned2014-06-27T10:58:11Z
dc.date.available2014-06-27T10:58:11Z
dc.date.issued2013
dc.identifier.citationVICENT, Mónica, et al. Atmospheric plasma spraying coatings from alumina–titania feedstock comprising bimodal particle size distributions. Journal of the European Ceramic Society, 2013, vol. 33, no 15, p. 3313-3324.ca_CA
dc.identifier.issn0955-2219
dc.identifier.issn1873-619X
dc.identifier.urihttp://hdl.handle.net/10234/96395
dc.description.abstractIn this work, Al2O3–13 wt% TiO2 submicron-nanostructured powders were deposited using atmospheric plasma spraying. The feedstocks were obtained by spray drying two starting suspensions of different solids content, prepared by adding nanosized TiO2 and submicron-sized Al2O3 powders to water. The spray-dried granules were heat-treated to reduce their porosity and the powders were fully characterised in both untreated and thermally treated state. Comparison with two commercial feedstocks was carried out. Characterisation allowed a temperature for the thermal treatment to be chosen on the basis of the sprayability of the feedstock and the preservation as much as possible of the submicron-sized structure of the unfired agglomerates. Optimisation of the deposition conditions enabled the reconstituted powders to be successfully deposited, yielding coatings that were well bonded to the substrate. The coating microstructure, characterised by SEM, was mostly formed by a matrix of fully molten particles where the presence of semi-molten feedstock agglomerates was also observed. Moreover, microhardness, toughness, adhesion and tribological behaviours were determined, and the impact of the granule characteristics on these properties was studied. It was found that changing the feedstock characteristics allows controlling the coating quality and properties. In general, good mechanical properties were obtained using a feedstock comprising a binary mixture of submicrometric Al2O3 and nanometric TiO2 particles in the spray-dried powder.ca_CA
dc.description.sponsorShipThis work has been supported by Spanish Ministry of Economy and Competitiveness (MAT2009-14144-C03 and MAT2012-38364-C03).ca_CA
dc.format.extent12 p.ca_CA
dc.language.isoengca_CA
dc.publisherCopyright © Elsevierca_CA
dc.relation.isPartOfJournal of the European Ceramic Society (2013), vol. 33, no 15ca_CA
dc.rightsCopyright © Elsevierca_CA
dc.subjectSuspensionsca_CA
dc.subjectAl2O3–TiO2ca_CA
dc.subjectNanoparticleca_CA
dc.subjectRheologyca_CA
dc.subjectSpray-dried powdersca_CA
dc.titleAtmospheric plasma spraying coatings from alumina–titania feedstock comprising bimodal particle size distributionsca_CA
dc.typeinfo:eu-repo/semantics/articleca_CA
dc.identifier.doihttp://dx.doi.org/10.1016/j.jeurceramsoc.2013.05.009
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessca_CA
dc.relation.publisherVersionhttp://www.sciencedirect.com/science/article/pii/S0955221913002483ca_CA


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record