ISSN 0862-5468 (Print), ISSN 1804-5847 (online) 

Ceramics-Silikáty 66, (1) 104 - 112 (2022)


EFFECTS OF THE SiO₂-B₂O₃ RATIO ON THE STRUCTURE AND PROPERTIES OF B₂O₃-ZnO-SiO₂-BaO-LiO₂-Al₂O₃-Na₂O-CaO PARENT GLASS AND GLASS-CERAMICS
 
Li Zijie 1, He Feng 1, Zheng Congcong 1, Yan Dongyang 1, Zhang Bing 1, Cao Xiuhua 2, Ren Haidong 2, Xie Junlin 1
 
1 State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
2 State Key Laboratory of Advanced Materials and Electronic Components, LTD of Guang Dong Feng Hua, Guangdong, Zhaoqing 526000, China

Keywords: Glass-ceramic, Physical capabilities, Acidity resistance, Thermal capabilities
 

The experimental results show that a decrease in the SiO₂/B₂O₃ ration reduced the glass transition temperature, but had little effect on the crystallisation temperature. The basic glass powder pressed into strip samples were sintered at a temperature of 630 to 690 °C. With a decrease in the SiO₂/B₂O₃ ratio, the structure of glass and glass-ceramics changed, and the same change also occurred in the crystal phase in the glass-ceramics. When the SiO₂/B₂O₃ ratio was 0.29, the glass-ceramics sintered at 670 °C reached the best properties, including the bending strength, density, and acid resistance. When the SiO₂/B₂O₃ ratio was 0.29, the coefficient of thermal expansion of the glass-ceramics sintered at different temperatures were maintained in the range of 6.3∼7.2×10-6 K-1.


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doi: 10.13168/cs.2022.0005
 
 
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