Influence of ZrO2 on the crystallization and properties of lithium disilicate glass-ceramics derived from a multi-component system

Lithium disilicate glass-ceramic in the Li2O-SiO2-Al2O3-K2O-P2O5 system was studied by incorporating ZrO2. The influence of ZrO2 on phase formation, microstructure, biaxial flexural strength and translucency were determined. Investigations were carried out by DSC, XRD and SEM. The mechanical strengt...

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Veröffentlicht in:Journal of the European Ceramic Society 2007, Vol.27 (2-3), p.1571-1577
Hauptverfasser: APEL, Elke, VAN'T HOEN, Christian, RHEINBERGER, Volker, HÖLAND, Wolfram
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container_end_page 1577
container_issue 2-3
container_start_page 1571
container_title Journal of the European Ceramic Society
container_volume 27
creator APEL, Elke
VAN'T HOEN, Christian
RHEINBERGER, Volker
HÖLAND, Wolfram
description Lithium disilicate glass-ceramic in the Li2O-SiO2-Al2O3-K2O-P2O5 system was studied by incorporating ZrO2. The influence of ZrO2 on phase formation, microstructure, biaxial flexural strength and translucency were determined. Investigations were carried out by DSC, XRD and SEM. The mechanical strength was measured corresponding to dental standard ISO 6872 and the contrast ratio determined by BS 5612 method. Zirconia influences the crystallisation by hampering crystal growth. With increasing ZrO2 content, the crystals become smaller. By increasing the crystallisation temperature, the crystal growth could be improved. The translucency of the glass-ceramic is adjusted by adding ZrO2. A highly translucent glass-ceramic with a contrast ratio of about 0.4 with a high strength microstructure was developed. 6 refs.
doi_str_mv 10.1016/j.jeurceramsoc.2006.04.103
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subjects Applied sciences
Building materials. Ceramics. Glasses
Chemical industry and chemicals
Exact sciences and technology
Glass-ceramics
Glasses
title Influence of ZrO2 on the crystallization and properties of lithium disilicate glass-ceramics derived from a multi-component system
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