Crystallization kinetics and temperature dependence of energy storage properties of niobate glass-ceramics  

铌酸盐微晶玻璃的晶化动力学及其储能性能的温度依赖性（英文）

作　　者：刘涛涌[1] 陈国华[1,2] 宋俊[1] 袁昌来[1,2] 

机构地区：[1]桂林电子科技大学材料科学与工程学院,桂林541004 [2]桂林电子科技大学广西信息材料重点实验室,桂林541004

出　　处：《Transactions of Nonferrous Metals Society of China》2014年第3期729-735,共7页中国有色金属学报（英文版）

基　　金：Project(51162002)supported by the National Natural Science Foundation of China;Project(2012-250)supported by the Science and Technology Project of Guangxi Returned Personnel,China

摘　　要：Glass-ceramic materials of strontium barium niobate system were prepared through a melt-quenching method. The effects of crystallization temperature on the mierostructure, dielectric property, breakdown strength and energy storage density of barium strontium niobate glass-ceramics were studied. The crystallization mechanism of the glass-ceramics was discussed and should be one-dimensional interfacial growth. The results indicate that the breakdown strength remarkably increases with the increase of crystallization temperature. The glass-ceramic heat treated at 900 ℃ was found to possess optimal properties with breakdown strength of 1300 kV/cm and energy storage density of 2.8 J/cm3, which is promising dielectric materials for high energy storage density dielectrics.采用熔融-淬冷法制备铌酸锶钡基微晶玻璃材料,研究晶化温度对铌酸锶钡微晶玻璃的显微组织、介电性能、击穿强度和储能密度的影响。微晶玻璃的晶化机理为一维界面晶体生长。结果表明:随着晶化温度的增加,材料的击穿强度明显增加。经900°C热处理得到的微晶玻璃具有最优的性能:击穿强度为1300 kV/cm,储能密度为2.8 J/cm3,其有望用于高储能密度电介质材料。

关 键 词：GLASS-CERAMICS dielectrics CRYSTALLIZATION electrical properties 

分 类 号：TQ171.1[化学工程—玻璃工业]