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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, a-eucryptite and a-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%.
Wydawca
Czasopismo
Rocznik
Strony
11--21
Opis fizyczny
Bibliogr. 29 poz., rys., tab.
Twórcy
autor
autor
- Imam Khomeini International University, Engineering, 34149 - 16818 , Qazvin, Iran, beh_mehdikhani@yahoo.com
Bibliografia
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- 23. Acchar W.I., Torquato W.L., Sousa C.R.C.: Using ZrO2 or Al2O3particles to enhance the mechanical properties of a LZSA glass-ceramic matrix. Revista Matéria 14(2009) 674 – 679.
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Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPG8-0058-0002