NUCLEATION, CRYSTALLISATION BEHAVIOUR AND MICROSTRUCTURE OF MICA GLASS-CERAMICS IN THE SYSTEM SrO.4MgO.xAl2O3.6SiO2.2MgF2 (x = 1, 1.5 AND 2)

NUCLEATION, CRYSTALLISATION BEHAVIOUR AND MICROSTRUCTURE OF MICA GLASS-CERAMICS IN THE SYSTEM SrO.4MgO.xAl2O3.6SiO2.2MgF2 (x = 1, 1.5 AND 2)

The effect of varying the Al2O3 content on the crystallisation and microstructure of strontium containing glasses based on the system SrO.4MgO.Al2O3.6SiO2.2MgF2 was investigated using DTA, XRD and SEM. The glass transition temperature (Tg) and first crystallisation peak temperature (Tp1) were reduce...

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Veröffentlicht in:Ceramics international 2013-01, Vol.39 (6), p.6963-6969
Hauptverfasser: Mallik, A, Kundu, P, Basumajumdar, A
Format: Artikel
Sprache:eng
Schlagworte:
Aluminium
Aluminum oxide
Crystallization
Glass
Mica
Microstructure
Silicates
Strontium
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Zusammenfassung:The effect of varying the Al2O3 content on the crystallisation and microstructure of strontium containing glasses based on the system SrO.4MgO.Al2O3.6SiO2.2MgF2 was investigated using DTA, XRD and SEM. The glass transition temperature (Tg) and first crystallisation peak temperature (Tp1) were reduced with decreasing alumina content. Glasses with x at least 1.5 showed a second crystallisation peak temperature (Tp2). The first crystallisation peak temperature (Tp1) corresponded to the formation of strontium fluorophlogopite and the second crystallisation peak temperature (Tp2) corresponded to the formation of strontium aluminium silicate.
ISSN:0272-8842