The effects of the addition of ZrSiO4 to 30Li(2)O/70SiO(2) powdered glass on its crystallization behaviour were investigated by means of differential thermal analysis (DTA), X-ray diffraction (XRD) and scanning electron microscopy (SEM). Transparent glasses with a ZrSiO4 content of up to 10.30 mol% were obtained. Li2Si2O5 and/or ZrSiO4, Li2Si2O5 and tridymite were crystallized after appropriate heat treatments. Kinetics parameters for surface crystallization were estimated from the DTA curves. The crystallization was completed in the 590-907 degrees C temperature range for activation energy values between 460.5 and 715.9 kJ mol(-1). The resulting materials are potential candidates for useful sintered glass-ceramics with a wide number of applications.

The effect of the addition of ZrSiO4 on the crystallization of 30Li(2)O/70SiO(2) powdered glass / A. P., NOVAES DE OLIVEIRA; Corradi, Anna; Barbieri, Luisa; Leonelli, Cristina; Manfredini, Tiziano. - In: THERMOCHIMICA ACTA. - ISSN 0040-6031. - STAMPA. - 286(2):(1996), pp. 375-386.

The effect of the addition of ZrSiO4 on the crystallization of 30Li(2)O/70SiO(2) powdered glass

CORRADI, Anna;BARBIERI, Luisa;LEONELLI, Cristina;MANFREDINI, Tiziano
1996

Abstract

The effects of the addition of ZrSiO4 to 30Li(2)O/70SiO(2) powdered glass on its crystallization behaviour were investigated by means of differential thermal analysis (DTA), X-ray diffraction (XRD) and scanning electron microscopy (SEM). Transparent glasses with a ZrSiO4 content of up to 10.30 mol% were obtained. Li2Si2O5 and/or ZrSiO4, Li2Si2O5 and tridymite were crystallized after appropriate heat treatments. Kinetics parameters for surface crystallization were estimated from the DTA curves. The crystallization was completed in the 590-907 degrees C temperature range for activation energy values between 460.5 and 715.9 kJ mol(-1). The resulting materials are potential candidates for useful sintered glass-ceramics with a wide number of applications.
1996
286(2)
375
386
The effect of the addition of ZrSiO4 on the crystallization of 30Li(2)O/70SiO(2) powdered glass / A. P., NOVAES DE OLIVEIRA; Corradi, Anna; Barbieri, Luisa; Leonelli, Cristina; Manfredini, Tiziano. - In: THERMOCHIMICA ACTA. - ISSN 0040-6031. - STAMPA. - 286(2):(1996), pp. 375-386.
A. P., NOVAES DE OLIVEIRA; Corradi, Anna; Barbieri, Luisa; Leonelli, Cristina; Manfredini, Tiziano
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/310127
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