CERAMIC AND GLASSY MATERIALS RESEARCH GROUP

UNIDAD DE INVESTIGACION EN MATERIALES CERAMICOS Y VITREOS

GLASS-CERAMIC MATERIALS. STUDY OF THE MICROSTRUCTURE-PROPERTIES BINOMY

The effects of the composition and processing variables are studied in the formation of adecuated microstructures wich allow to optimise the physical properties of glass-ceramic materials. We are basically involved with optical and mechanical properties.
At this time we are working on the following items:

• Cordierite-, diopside-, or mullite-based glass-ceramics in the quaternary system SiO₂-Al₂O₃-MgO-CaO.
• Cordierite and spinel glass-ceramics in which the crystalline phase contains different transition metal cations.
• Preparation of glass-ceramics using sol-gel techniques.

Selected publications

Mechanism of crystallization of Co-cordierites from stoichiometric powdered glasses
     M. A. Villegas y J. Alarcón
     J. Eur. Ceram. Soc., 22 [4] 487-494 (2002)
Crystallization and microstructural development of nickel-containing aluminosilicate glasses with cordierite stoichiometry
     M. A. Villegas y J. Alarcón
     J. Non-Cryst. Solids, 292 70-79 (2001)
Cristalización de cordierita en vidrios derivados del sistema cuaternario CaO-MgO-Al₂O₃-SiO₂. Influencia de la composición del vidrio
     J. Vila, C. Valentín, M. C. Muñoz, M. Sales y J. Alarcón
     Bol. Soc. Esp. Ceram. Vidrio, 38 [5] 390-396 (1998)
Crystallization of sol-gel derived glass-ceramic powders in the CaO-MgO-Al₂O₃-SiO₂ system. Part II. Cordierite
     M. Sales y J. Alarcón
     J. Mater. Sci., 30 2341-2347 (1995)
Crystallization of sol-gel derived glass-ceramic powders in the CaO-MgO-Al₂O₃-SiO₂ system
     M. Sales y J. Alarcón
     J. Mater. Sci., 29, 5153-5157 (1994)