极性微晶玻璃的结构与热释电性能研究  

Structure and Pyroelectricity of Polar Ba_(2-x)Sr_xTiSi_2O_8 Glass-Ceramics

作　　者：张栋杰[1] 王晓敏[1] 丁振亚[2] 

机构地区：[1]南京师范大学材料科学实验室,江苏南京210097 [2]武汉工业大学北京研究生部,北京100024

出　　处：《玻璃与搪瓷》2004年第6期11-13,23,共4页Glass & Enamel

基　　金：江苏高校自然科学研究计划项目(NO.03KJB430068)

摘　　要：采用高温熔融方法制备了Ba2-xSrxTiSi2O8(简称BSTS)非铁电极性微晶玻璃。用XRD和SEM分析了其取向生长的结构特性。BSTS微晶玻璃使用温度高,不易老化,抗磁电干扰,同时具有较大的热释电电压及探测率优值因子,分别为0.27m2·C-1和10-5Pa-1/2,其非制冷热释电探测器探测率D (500,80,1)为1.5×107cm·Hz·W-1,适合于热释电探测器方面应用。The glass of BaO-SrO-TiO_2-SiO_2 was prepared by high temperature melting method. Used high gradient temperature, the polar microcrystal Ba_(2-x)Sr_xTiSi_2O_8(BSTS) crystallized from the glass systems. The structure of oriented growth under gradient of temperature had been determined by XRD and SEM. Used at high temperature (up to 1000℃), BSTS glass-ceramics have no aging problem and also have interference immunity to electric or magnetic field up to 1.2T.The polar Ba_(2-x)Sr_xTiSi_2O_8 glass-ceramics have a larger pyroelectric constant.Response detector and vidicon of polar BSTS glass-ceramic were 0.27m^2C^(-1 )and 10^(-5 )Pa^(-1/2), respectively. The pyroelectric detection efficiency D~*(500,80,1) of polar BSTS glass-ceramic was 1.5×10~7cm·Hz·W^(-1). Obvioursly it is a promising material for high temperature pyroelectric detectors.

关 键 词：微晶玻璃 热释电 极性微晶 

分 类 号：TQ171.733[化学工程—玻璃工业]