CERAMIC AND GLASSY MATERIALS RESEARCH GROUP

UNIDAD DE INVESTIGACION EN MATERIALES CERAMICOS Y VITREOS

PREPARATION OF MATERIALS BY SOL-GEL TECHNIQUES

No-conventional synthetic techniques allow to obtain and characterise ceramic systems which are difficult to synthesize by traditional routes.
In this project we have examined some processing variables on the gel formation and further reactions trough thermal processing. The project has involved working with a range of ceramic systems wich show several kinds of properties: mechanical, optical, electrical and cathalist.
We are concentrated actually on developing inorganic-organic hybrid materials displaying optical properties.

Selected publications

Low-temperature metastabilization of tetragonal V⁺⁴-containing ZrO₂ solid solutions
     C. Valentín, J. V Folgado and J. Alarcón
     Mat. Res. Bull, 36 1615-1627 (2001)
Effect of NiO and/or TiO₂ mullite formation and microstructure from gels
     M. Sales, J. Vila and J. Alarcón
     J. Mater. Sci., 33 4435-4446 (1998)
Synthesis and phase transformations of mullites obtained from SiO₂-Al₂O₃ gels
     M. Sales and J. Alarcón
     J. Eur. Ceram. Soc., 16 781-789 (1996)
Synthesis of Cr_xTi_1-2xNb_xO₂ 0<x<0.5 solid solutions from alkoxides
     M. A. Tena, G. Monrós, J. Carda, E. Cordoncillo, P. Escribano and J. Alarcón
     J. Mater. Sci., 29 3817-3821 (1994)
The preparation and thermal evolution of polymeric gels with garnet stoichiometry in the CaO-Al₂O₃-SiO₂ and CaO-Cr₂O₃-SiO₂ systems
     J. Carda, M. I. Burguete, G. Monrós, P. Escribano and J. Alarcón
     J. Eur. Ceram. Soc., 6 97-105 (1990)