陕西科技大学学报（自然科学版）2017，Vol.35Issue(4)：38-43,6.
Dy3+/Tb3+共掺ABS系统磁光玻璃的析晶动力学研究
Study on the crystallization kinetic behavior of Dy3+/Tb3+doped magneto-optic glasses
摘要
Abstract
In this paper,the magneto-optic glass of Tb2O3 doped ABS system was prepared by high temperature melting cooling process.The crystallization behavior and microstructure of Dy3+/Tb3+ doped aluminoborosilicate (ABS) magneto-optical glasses was investigated using DSC,XRD,SEM and FT-IR.With the help of the Kissinger and Augis-Bennett equation,the crystallization kinetics of the precipitates and the kinetics of the phase transition of the glass were analyzed.The results showed that the Al3Tb(BO3)4 and TbBO3 crystals are precipitated from the glass matrix when being heated at 846.8 ℃ and 898.6 ℃,respectively.The crystallization activation energy of the two crystalline phases (Al3Tb(BO3)4 and TbBO3) was Ep1=972.3 kJ/mol and Ep2=532.79 kJ/mol,respectively.The average crystallization index was 0.5 and 0.8,respectively.By applying the Kissinger equation to the parameterized crystallization behavior,the calculated phase transition activation energy was determined to be 413.22 kJ/mol.By the physical properties of the magneto-optic glass crystallization,the density and expansion coefficient of the matrix glass are increased.关键词
磁光玻璃/析晶动力学/活化能Key words
magneto-optic glass/crystallization kinetics/activation energy分类
社会科学引用本文复制引用
郭宏伟,宋建波,殷海荣,杨晨,李艳肖,王宇飞..Dy3+/Tb3+共掺ABS系统磁光玻璃的析晶动力学研究[J].陕西科技大学学报（自然科学版）,2017,35(4):38-43,6.基金项目
国家自然科学基金项目(51472151) （51472151）
科技部重点研发计划专项项目(2017YFB0310201) （2017YFB0310201）
咸阳市科学技术研究计划项目(2016K02-28) （2016K02-28）
