<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">The crystallisation characteristics of glasses based on the Li2O-CaO-SiO2-Al2O3(LCSA) system containing TiO2, ZrO2 has been investigated by differential thermal analysis (DTA), X-ray diffraction analysis (XRD), and scanning electron microscopy (SEM). The partial replacement of Li2O, CaO and SiO2 by TiO2, ZrO2 in the studied glass-ceramics led to the development of different crystalline phase assemblages, including lithium calcium silicates, wollastonite, β-eucryptite and β-spodumene using various heat-treatment processes. The rod-like growth morphology was observed by SEM for glass free of TiO2. In this glass, ZrO2 reduced mobility of boundary at sintering temperature, 1000°C and relatively density was 77%. The most sinterability observed in sample containing TiO2 and free of ZrO2 at sintering temperature, 1000°C and relatively density was 84%.</abstract>

The crystallisation characteristics of glasses based on the Li2O-CaO-SiO2-Al2O3(LCSA) system containing TiO2, ZrO2 has been investigated by differential thermal analysis (DTA), X-ray diffraction analysis (XRD), and scanning electron microscopy (SEM). The partial replacement of Li2O, CaO and SiO2 by TiO2, ZrO2 in the studied glass-ceramics led to the development of different crystalline phase assemblages, including lithium calcium silicates, wollastonite, β-eucryptite and β-spodumene using various heat-treatment processes. The rod-like growth morphology was observed by SEM for glass free of TiO2. In this glass, ZrO2 reduced mobility of boundary at sintering temperature, 1000°C and relatively density was 77%. The most sinterability observed in sample containing TiO2 and free of ZrO2 at sintering temperature, 1000°C and relatively density was 84%.

The effect of compositional changes on the crystallisation behaviour and mechnical properties of Li2O-CaO-SiO2-Al2O3

Imam Khomeini International University, Engineering, 34149 - 16818, Qazvin, Iran

Institute of Standard and Research Industrial of Iran, Engineering, 31585-163, Karaj, Iran

Advances in Materials Science

The effect of compositional changes on the crystallisation behaviour and mechnical properties of LiO-CaO-SiO-AlO

The crystallisation characteristics of glasses based on the Li2O-CaO-SiO2-Al2O3(LCSA) system containing TiO2, ZrO2 has been investigated by differential...

The effect of compositional changes on the crystallisation behaviour and mechnical properties of Li₂O-CaO-SiO₂-Al₂O₃

Pubblicato online: 03 gen 2012

Pagine: 11 - 21

DOI: https://doi.org/10.2478/v10077-011-0019-3

Parole chiave
LiO-CaO-SiO-AlO, crystallisation, TiO, ZrO, glass-ceramic

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