成分对Ge_xSe_(90-x)Sb_(10)玻璃特征温度及性能的影响  

Effect of Composition on Characteristic Temperature and Properties of Ge_xSe_(90-x)Sb_(10) Glasses

作　　者：坚增运[1] 郑超[1] 常芳娥[1] 周晶[1] 高玉社[1] 吕士勇[1] 

机构地区：[1]西安工业大学材料与化工学院,西安710032

出　　处：《西安工业大学学报》2009年第1期52-55,61,共5页Journal of Xi’an Technological University

基　　金：陕西省自然科学基金(2005E111);西安市工业攻关项目(GG0647);陕西省薄膜技术与光学检测重点实验室开放课题(ZSKJ200502)

摘　　要：采用熔体淬冷法制得块状GexSe90-xSb10（x=20，23，25，30）硫系玻璃，并通过实验测定研究了成分对玻璃转变温度瓦、密度和红外透过率的影响．研究发现，随锗含量的增加，Tg先增大而后减小，密度先减小而后增大．当x=25时，Tg有最大值320．28℃，密度有最小值4．49g／cm^3．在2～15μm波长范围内的红外透过率为60％左右．影响硫系玻璃转变温度Tg的主要因素是由系统中化学键的相对形成几率所决定的平均键能．Gex Se90-xSb10 （x= 20,23,25,30） glasses are prepared by the melt quenching method. The effect of composition on glass transition temperature Tg, density and infrared transmission of the glasses have been investigated. It is found that Tg firstly increases and then decreases with increasing germanium content. The density firstly decreases and then increases with increasing germanium content. When x is 25, Tg reaches its maximum 320. 28 ℃ and the density reaches its minimum 4. 49 g/cm^3. The infrared transmission of the GexSe90-xSb10 glasses is about 60% in the wavelength region from 2 to 15 μm. The main factor influencing glass transition temperature Tg of chalcongenide glass is the overall mean bond energy, which is related to bond relative probability.

关 键 词：硫系玻璃 玻璃转变温度 化学键键能 透过率 

分 类 号：TQ171.112[化学工程—玻璃工业]