掺P_2O_5氟化镓铟基玻璃微晶化可控性机理的探讨  

Controllable Crystallization Mechanism of P_2O_5 Doped Fluoride Glass Ceramic

作　　者：周凯[1] 杨智杰[1] 朱基千[1,2] 

机构地区：[1]同济大学物理系,上海200092 [2]同济大学材料科学与工程学院,上海200092

出　　处：《材料科学与工程学报》2011年第2期210-213,共4页Journal of Materials Science and Engineering

摘　　要：用熔融法制备掺少量P2O5氟化镓铟基玻璃(20GaF3-15InF3-17CdF2-15ZnF2-10SnF2-20PbF2-3P2O5),玻璃的析晶动力学分析结果表明:掺入P2O5能使氟化镓铟基玻璃的析晶双峰间温度差△Tp(△Tp=Tp1-Tp2)增大,使可控微晶化变为可能。同时利用X射线衍射分析方法(XRD)和扫描电镜讨论了该微晶化玻璃的晶相和析晶形貌,并在593 K下保温1 h能得到透明度较好、含四方晶相ZnF2的微晶玻璃。A transparent glass-ceramic was prepared by heat treating a fluoride glass doped with P_2O_5（20GaF_3-15InF_3-17CdF_2-15ZnF_2-10SnF_2-20PbF_2-3P_2O_5）.The study of crystallization kinetics indicates that P_2O_5 increases the temperature difference between two crystallization peaks△T_p（△T_p=T_p1-T_p2） and it supplies the chance for controllable glass-ceramics processing.The microstructures were studied by means of X-ray diffractometry（XRD） and scanning electron microscopy（SEM）.And a good transparency glass ceramic with tetragonal crystal structure of ZnF_2 can be obtained after treating at 593K for 1h.

关 键 词：可控微晶化 氟化镓铟基玻璃 微晶玻璃 

分 类 号：TQ171.1[化学工程—玻璃工业]