20GaF_3-15InF_3-20CdF_2-15ZnF_2-20PbF_2-10SnF_2玻璃析晶动力学研究  

Crystallization Kinetics of 20GaF_3-15InF_3-20CdF_2-15ZnF_2-20PbF_2-10SnF_2 Glass

作　　者：朱基千[1] 李志国[2] 唐高[2] 贺芸芬[2] 

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

出　　处：《同济大学学报（自然科学版）》2005年第12期1656-1659,共4页Journal of Tongji University:Natural Science

摘　　要：用非等温方法研究了20GaF3-15InF3-20CdF2-15ZnF2-20PbF2-10SnF2(GICZPS)氟化物玻璃的析晶动力学.结果表明,较之通常采用的JMA模型,双参数的自催化模型可以更好地描述玻璃的析晶动力学过程.在GICZPS玻璃的非等温析晶过程中,形核与晶体长大的过程是重叠的,已经析出的相会加速析晶的进程.20GaF3-15InF3-20CdF2-15ZnF2-20PbF2-10SnF2 （GICZPS） glass was studied by differential scanning calorimetry under non-isothermal conditions. It is shown that the autocatalytic model gives a better description of the kinetic process of the GICZPS glass crystallization compared with the JMA model. The results indicate that the nucleation process keeps on being active during the whole stage of the crystallization growth, so that the process of devitrification is accelerated.

关 键 词：氟化物玻璃 差示扫描量热分析 JMA模型 自催化模型 

分 类 号：TQ133.5[化学工程—无机化工] O795[理学—晶体学]