Crystallization Kinetics of Lithium Aluminum Germanium Phosphate Glass by DSC Technique

作     者：HE Kun WANG Yanhang ZU Chengkui LIU Yonghua ZHAO Huifeng HAN Bin CHENG Jiang 何坤;WANG Yanhang;祖成奎;LIU Yonghua;ZHAO Huifeng;HAN Bin;CHENG Jiang

作者机构：Quartz and Special Glasses InstituteChina Building Materials AcademyBeijing 100024China 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2012年第27卷第1期

页      面：63-66页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：National Natural Science Foundation of China (NSFC) (No. 60808024) 

主　　题：phosphate glass crystallization kinetics thermal stability XRD analysis 

摘      要：Abstract： The crystallization kinetics of Li20-A12O3-GeO2-P205 （LAGP） glass fabricated via the conventional melt-quenching method was studied by differential scanning calorimetry （DSC） under non- isothermal condition at different heating rates. The activation energy of glass transition Eg is 634.4 kJ/mol, indicating that LAGP glass is easy to crystallize at an elevated temperature. The activation energy of crystallization Eo and Avrami index n obtained from Matusita＇s model are 442.01 kJ/mol and 1.7, respectively. The value of n reveals that bulk crystallization predominates slightly over surface crystallization during crystallization process. LAGP glass-ceramics after different heat treatments have the same crystalline phases determined as major phase LiGe2（PO4）3, with A1PO4 and GeO2 as their impurity phases.