Numéro
J. Phys. IV France
Volume 03, Numéro C8, Décembre 1993
IX International Conference on Small Angle Scattering
Page(s) C8-329 - C8-332
DOI http://dx.doi.org/10.1051/jp4:1993866
IX International Conference on Small Angle Scattering

J. Phys. IV France 03 (1993) C8-329-C8-332

DOI: 10.1051/jp4:1993866

Small-angle scattering investigation of phase separation in glasses influenced by admixtures of TiO2, MoO3 and WO3

U. LEMBKE, A. HOELL, R. KRANOLD and R. BRÜCKNER

Universität Rostock, Fachbereich Physik, Universitätsplatz 3, Postfach 999, 2500 Rostock 1, Germany


Abstract
Two silicate glasses with different compositions have been investigated by combining conventional small-angle X-ray scattering with methods of contrast variation (anomalous dispersion, neutron scattering). It has been shown that in a base glass for glass ceramics TiO2 additives which accelerate the process of phase separation are inhomogeneously distributed in the glass and cover the separating droplet phase. The influence of WO3 and MoO3 on the conditions of the phase separation in a soda-lime-silica glass mainly consists in a shift of the miscibility dome in the phase diagram up to higher temperatures.



© EDP Sciences 1993