溶胶-凝胶法制备Li_2O-Al_2O_3-SiO_2微晶玻璃粉末  

Li_2O-Al_2O_3-SiO_2 Glass-Ceramic Powders Prepared by Sol-Gel Process

作　　者：张培新[1,2] 许启明[1] 刘剑洪[2] 任祥忠[2] 罗仲宽[2] 张黔玲[2] 

机构地区：[1]西安建筑科技大学材料科学与工程学院,陕西西安710055 [2]深圳大学化学与化工学院,深圳518060

出　　处：《稀有金属材料与工程》2008年第A02期537-539,共3页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(50674068)

摘　　要：采用溶胶-凝胶法制备了Li2O-Al2O3-SiO2系玻璃粉末,利用X射线衍射(XRD)、红外光谱(IR)等手段研究了Li2O-Al2O3-SiO2系玻璃的晶化过程,探讨了热处理温度和时间对晶相形成及晶体粒径的影响。结果表明:玻璃在热处理650℃下开始析晶,在1150℃左右晶体生长基本完全。随着热处理温度的升高和热处理时间的增加,晶体粒径增大。LiO2-Al2O3-SiO2 （LAS） glass-ceramic powder was prepared by a sol-gel method. The crystallization process was investigated by means of the X-ray Diffraction Analysis （XRD） and Infrared spectroscopy （IR）. The influence of heating temperature and time on crystalline phase and particle size were also discussed. The results suggest that the emerging crystal begins at 650 ℃, and the growth of crystal stops at 1150℃. Particle size becomes larger with the increase of heating temperature and heating time.

关 键 词：溶胶-凝胶法 LI2O-AL2O3-SIO2 微晶玻璃 

分 类 号：TQ171.1[化学工程—玻璃工业]