Preparation and Characteristic of Glass-Ceramics with Super Low Thermal Expansion Coefficient
来源期刊：JOURNAL OF RARE EARTHS2006年增刊第1期
论文作者：Wang Kun Zhao Chunxia Jiang Hui Chen Guangle Wang Shengjun Fan Shigang
Key words：low thermal expansion; Li2O-Al2O3-SiO2; transparent glass-ceramics;
Abstract: The preparation technics of glass-ceramics with super low coefficient of thermal expansion containing β-quartz solid solution as a main crystal phase based on the glass in the system Li2O-Al2O3-SiO2 was introduced. The composition of base glass, technics of melting and heat treatment effecting on characteristic of glass-ceramics was described. Specimens were prepared by melting, anneal and controlled two steps heat treatment. Crystal phase, microstructure and elementary distributing were studied by using XRD, SEM and EDS respectively. Prepared specimens show excellent transparency and super low thermal expansion coefficient of 2×10-8 ·K-1, which reaches international advanced level.
Wang Kun1，Zhao Chunxia1，Jiang Hui1，Chen Guangle1，Wang Shengjun1，Fan Shigang1
(1.Research Institute of Synthetic Crystals, Beijing 100018, China)
Abstract:The preparation technics of glass-ceramics with super low coefficient of thermal expansion containing β-quartz solid solution as a main crystal phase based on the glass in the system Li2O-Al2O3-SiO2 was introduced. The composition of base glass, technics of melting and heat treatment effecting on characteristic of glass-ceramics was described. Specimens were prepared by melting, anneal and controlled two steps heat treatment. Crystal phase, microstructure and elementary distributing were studied by using XRD, SEM and EDS respectively. Prepared specimens show excellent transparency and super low thermal expansion coefficient of 2×10-8 ·K-1, which reaches international advanced level.
Key words:low thermal expansion; Li2O-Al2O3-SiO2; transparent glass-ceramics;
【全文内容正在添加中】
