The effect of fluoride ions on the structure and crystallization kinetics of La2O3-containing diopside based oxyfluoride glasses

abstract

Oxyfluoride glasses in the system CaO-MgO-BaO-SiO2-Al2O3-La2O3-CaF2 were obtained by adding CaF2 (3-8 wt%) to a parent diopside based glass composition, Ca0.8Ba0.1MgAl0.1La0.1Si1.9O6. The characterization of the glasses has been made by density, dilatometry and FTIR measurements. Non-isothermal crystallization kinetic studies in conjunction with XRD and SEM have been employed in order to investigate the effects of fluoride ion additions on crystallization behaviour and mechanism of glasses. (c) 2009 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

keywords

ALUMINOSILICATE GLASSES; CERAMICS; LUMINESCENCE; NUCLEATION; NANOCRYSTALS; ER3+; CAF2

subject category

Materials Science

authors

Kansal, I; Goel, A; Tulyaganov, DU; Shaaban, ER; Ribeiro, MJ; Ferreira, JMF

our authors

acknowledgements

This study was financially supported by University of Aveiro, CICECO and FCT, Portugal (SFRH/BD/37037/2007).

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