Benavente Martínez, R.; Salvador Moya, MD.; Alcázar, M.; Moreno, R. (2012). Dense nanostructured zirconia compacts obtained by colloidal filtration of binary mixtures. Ceramics International. 38(3):2111-2117. https://doi.org/10.1016/j.ceramint.2011.10.051
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/67152
Title:
|
Dense nanostructured zirconia compacts obtained by colloidal filtration of binary mixtures
|
Author:
|
Benavente Martínez, Rut
Salvador Moya, Mª Dolores
Alcázar, M.C.
Moreno, R.
|
UPV Unit:
|
Universitat Politècnica de València. Instituto de Tecnología de Materiales - Institut de Tecnologia de Materials
Universitat Politècnica de València. Departamento de Ingeniería Mecánica y de Materiales - Departament d'Enginyeria Mecànica i de Materials
|
Issued date:
|
|
Abstract:
|
As starting materials two commercial nanosized zirconias doped with 3 mol% of Y 2O 3 were used: a powder of about 100 nm (TZ3YE, Tosoh, Japan) and a colloidal suspension of about 15 nm (Mel Chemicals, UK). Colloidal stability ...[+]
As starting materials two commercial nanosized zirconias doped with 3 mol% of Y 2O 3 were used: a powder of about 100 nm (TZ3YE, Tosoh, Japan) and a colloidal suspension of about 15 nm (Mel Chemicals, UK). Colloidal stability in water was studied for both zirconias in terms of zeta potential as a function of deflocculant concentration and pH. Concentrated suspensions were prepared by dispersing the powder in the colloidal suspension to solids loadings ranging from 5 to 30 vol.% using a sonication probe to achieve dispersion. The rheological behavior was optimized in terms of solids content, deflocculant content and sonication time. Optimized suspensions with up to 25 vol.% solids showed a nearly Newtonian behavior and extremely low viscosities and maintain stable for long times (days) which is an important drawback of conventional nanoparticle suspensions. Samples obtained by slip casting in plaster moulds were used for dynamic sintering studies and dense, nanostructured specimens were obtained at temperatures of 1300-1400°C.
[-]
|
Subjects:
|
A. Suspensions
,
Y-TZP
,
Rheology
,
Nanoparticles
|
Copyrigths:
|
Reserva de todos los derechos
|
Source:
|
Ceramics International. (issn:
0272-8842
) (eissn:
1873-3956
)
|
DOI:
|
10.1016/j.ceramint.2011.10.051
|
Publisher:
|
Elsevier
|
Publisher version:
|
http://dx.doi.org/10.1016/j.ceramint.2011.10.051
|
Project ID:
|
info:eu-repo/grantAgreement/MICINN//MAT2009-14144-C03-02/ES/Evaluacion De Propiedades De Nuevos Recubrimientos Nanoestructurados Obtenidos Por Proyeccion Por Plasma Atmosferico A Partir De Disoluciones Y Suspensiones Concentradas De Nanoparticulas/
info:eu-repo/grantAgreement/MICINN//MAT2009-14369-C02-01/ES/Ensamblaje De Materiales Nanoestructurados Mediante Procesamiento Coloidal Y Laser Para Aplicaciones Fotonicas Y Estructurales/
info:eu-repo/grantAgreement/UPV//PAID-02-11-1752/
|
Thanks:
|
This work has been supported by Spanish Ministry of Science and Innovation (Projects MAT2009-14144-C03-02 and MAT2009-14369-C02-01). R. Moreno thanks to Universidad Politecnica de Valencia for the concession of a grant in ...[+]
This work has been supported by Spanish Ministry of Science and Innovation (Projects MAT2009-14144-C03-02 and MAT2009-14369-C02-01). R. Moreno thanks to Universidad Politecnica de Valencia for the concession of a grant in the frame of its Programme of Support to R + D (PAID-02-11, R-1752).
[-]
|
Type:
|
Artículo
|