It is intended both to extend the knowledge of the basic
science in industrial pigmenting systems and also to develop new structures with a
determined absortion spectrum. The main target is to optimise the cromophore and
thermodynamic characteristics in the pigmenting structures. Likewise, we look for to gain
control on microstructural features of the ceramic powders resulting in ceramic pigments.
To achieve the above objectives we have focused our investigations on two basic aspects:
Control
of the reactivity to obtain monophasic pigments with high degree of homogeneity. This is
reached using no-conventional synthetic ways such as sol-gel techniques.
Complete
characterization of the pigmenting system in each one of the preparation steps using
several techniques such as: X-ray powder diffraction and electron diffraction; scanning
and transmision electron microscopies; infrared, nuclear magnetic resonance, Raman and
ultraviolet-visible spectroscopies.
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Selected publications
 Structural evolution and
vanadium distribution in the preparation of V4+- ZrSiO4 solid solutions from gels
Francisco José Torres, José Vicente Folgado and Javier
Alarcón
J. Am. Ceram. Soc., 85 [4] 794-799 (2002)
Rietveld refinement and
tetragonal V+4- ZrO2 solid solutions obtained from gels by X-ray
powder diffraction
Francisco José Torres, Jose Maria Amigó, Javier Alarcón
J. Solid State Chem.,163, 33-36 (2002)
Crystallization behaviour and
microstructural development in ZrSiO4 and V-ZrSiO4 solid solutions
from colloidal gels
Javier Alarcón
J. Eur. Ceram. Soc., 20 1749-58 (2000)
Synthesis and
characterization of vanadium-containing ZrSiO4 solid solutions from gels
Carla Valentín, Mari Carmen Muñoz, Javier Alarcón
J. Sol-Gel Tech., 15 221-230 (1999)
Cobalt-aluminate
spinel-mullite composites synthesized by sol-gel method
Manuela Sales, Carla Valentín, Javier Alarcón
J. Eur. Ceram. Soc., 17 41-47 (1997)
Reaction sequence in the
preparation of NiAl2O4 spinel-mullite composites by sol-gel
Manuela Sales, Carla Valentín, Javier Alarcón
J. Am. Ceram. Soc., 80 [7] 1798-804 (1997) |
