EFFECT OF CRYSTALLISATION TEMPERATURE ON LAS TRANSPARENT GLASS-CERAMICS CONTAINING A HIGH Al₂O₃ CONTENT

Mingjuan Shi; Feng He; Zhou Zhiqiang; Yang  Xiaorong; Xie  Junlin

doi:10.13168/cs.2022.0010

Ceramics-Silikáty (Mar 2022)

EFFECT OF CRYSTALLISATION TEMPERATURE ON LAS TRANSPARENT GLASS-CERAMICS CONTAINING A HIGH Al₂O₃ CONTENT

Mingjuan Shi,
Feng He,
Zhou Zhiqiang,
Yang Xiaorong,
Xie Junlin

Affiliations

Mingjuan Shi: State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, PR China
Feng He: State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, PR China
Zhou Zhiqiang: State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, PR China
Yang Xiaorong: State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, PR China
Xie Junlin: State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, PR China

DOI: https://doi.org/10.13168/cs.2022.0010
Journal volume & issue: Vol. 66, no. 2
pp. 157 – 166

Abstract

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The influence of the crystallisation temperature on the structure and properties of Li₂O-Al₂O₃-SiO₂ (LAS) glass-ceramics with a high aluminium content was investigated. Glass-ceramics with ultra-low CTE and high transmittance were successfully prepared by the melt-quenching method and a two-step heat treatment. The crystallisation behaviour of the glass was studied via DSC and XRD. Besides, FTIR, Raman and FE-SEM were used to explore the structure of the samples under different crystallisation temperatures. The results showed that a β-quartz solid solution with nano-size precipitated from the glass after the heat treatment and when the crystallisation temperature was 820 °C, the bending strength and microhardness reached 156 MPa and 1082.09 HV, respectively.

Published in Ceramics-Silikáty

ISSN: 0862-5468 (Print); 1804-5847 (Online)
Publisher: University of Chemistry and Technology, Prague
Country of publisher: Czechia
LCC subjects: Technology: Chemical technology: Clay industries. Ceramics. Glass
Website: http://www.ceramics-silikaty.cz/

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