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Journal of Sol-Gel Science and Technology
Published in: Journal of Sol-Gel Science and Technology 2/2018

11-07-2018 | Original Paper: Sol–gel and hybrid materials for biological and health (medical) applications

Sintering properties of sol–gel derived lithium disilicate glass ceramics

Authors: Feng Wang, Ke Li, Congqin Ning

Published in: Journal of Sol-Gel Science and Technology | Issue 2/2018

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Abstract

Lithium disilicate (Li2Si2O5) glass-ceramics were fabricated through two sol–gel methods: the nitrate route and the alkoxide route. Thermal analysis revealed different crystallization processing of two gel-derived powders. Li2Si2O5 powders were obtained after heat treatment at 800 °C. These powders were pressed and pressureless sintered under 900–1030 °C. Microstructure of sintered samples revealed the grain size and morphology of Li2Si2O5 ceramics. Although grain size in both samples increased with increasing sintering temperature, samples from the alkoxide route derived powders had more uniform grain size and pore distribution. In addition, open porosity decreased in both samples with increasing sintering temperature. Unlike familiar nucleation that resulted in grain growth mechanism, the Li2Si2O5 particles developed into irregular large size grains at first, and then grew into rod-shaped grains.
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Metadata
Title
Sintering properties of sol–gel derived lithium disilicate glass ceramics
Authors
Feng Wang
Ke Li
Congqin Ning
Publication date
11-07-2018
Publisher
Springer US
Published in
Journal of Sol-Gel Science and Technology / Issue 2/2018
Print ISSN: 0928-0707
Electronic ISSN: 1573-4846
DOI
https://doi.org/10.1007/s10971-018-4738-3

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