Study of colloidal behaviour and rheology of Al2O3-TiO2 nanosuspensions to obtain free-flowing spray-dried granules for atmospheric plasma spraying
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Otros documentos de la autoría: Vicent Cabedo, Mónica; Sánchez-Vilches, Enrique; Mallol Gasch, Gustavo; Moreno, Rodrigo
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Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7033
comunitat-uji-handle3:10234/8618
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INVESTIGACIONMetadatos
Título
Study of colloidal behaviour and rheology of Al2O3-TiO2 nanosuspensions to obtain free-flowing spray-dried granules for atmospheric plasma sprayingFecha de publicación
2013-09Editor
ElsevierISSN
0272-8842Cita bibliográfica
VICENT, Mónica, et al. Study of colloidal behaviour and rheology of Al2O3–TiO2 nanosuspensions to obtain free-flowing spray-dried granules for atmospheric plasma spraying. Ceramics International, 2013, vol. 39, no 7, p. 8103-8111Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://www.sciencedirect.com/science/article/pii/S0272884213003684#Versión
info:eu-repo/semantics/submittedVersionPalabras clave / Materias
Resumen
This work deals with the dispersion and stabilisation of nanosized Al2O3 and TiO2 particles in aqueous medium. The dispersing conditions were studied as a function of pH, dispersant content, solid loading and ageing ... [+]
This work deals with the dispersion and stabilisation of nanosized Al2O3 and TiO2 particles in aqueous medium. The dispersing conditions were studied as a function of pH, dispersant content, solid loading and ageing.
Well-dispersed nanosuspensions of Al2O3 with solids contents up to 15 vol.% and TiO2 with solids contents up to 30 vol.% were obtained by dispersing each type of nanoparticles with 4 wt% of polyacrylic acid-based polyelectrolyte. In order to obtain a concentrated 87 wt% Al2O3–13 wt% TiO2 suspension, a 15 vol.% homogeneous nanosuspension, composed by alumina and titania nanopowders, was prepared and then reconstituted by spray-drying into free-flowing powders. This spray-dried powder showed an adequate granule size distribution, a very high flowability and a reasonable density for diverse purposes, such as to be used in atmospheric plasma spraying as a feedstock to obtain nanostructured coatings. [-]
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Ceramics International, 2013, vol. 39, no 7Derechos de acceso
Copyright © 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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info:eu-repo/semantics/openAccess
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info:eu-repo/semantics/openAccess
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