氯化铯对GeSe2-Sb2Se3玻璃的析晶及红外透过性能的影响  

EFFECT OF CsCl CONTENT ON CRYSTALLIZATION CHARACTERISTICS AND PROPERTIES OF INFRARED TRANSMITTING OF GeSe_2–Sb_2Se_3 GLASSES

作　　者：兰建花[1,2] 徐铁峰[1] 聂秋华[1] 戴世勋[1] 赵俊[2] 沈祥[1] 章向华[1,3] 

机构地区：[1]宁波大学信息科学与工程学院,浙江宁波315211 [2]宁波城市职业技术学院信息学院,浙江宁波315100 [3]法国雷恩1大学玻璃与陶瓷实验室,法国雷恩35042

出　　处：《硅酸盐学报》2009年第4期568-573,共6页Journal of The Chinese Ceramic Society

基　　金：国家自然基金(60878042);国家科技部973前期预研(2006CB708607);浙江省科技厅重大科技攻关项目(2006C11127);宁波市自然科学基金项目(2006A610056);宁波市科技局科技攻关(国际合作)项目(2006B100068);宁波大学王宽诚幸福基金资助。

摘　　要：采用熔融–急冷法制备了20GeSe2–(80–x)Sb2Se3–xCsCl(x=2,4,6,8和10,以摩尔计)系列玻璃样品,用热膨胀仪、棱镜耦合仪、差热分析仪等测试了样品的密度、线膨胀系数、折射率、玻璃转变温度Tg和析晶开始温度Tx等。讨论了氯化铯(CsCl)对玻璃的热力学性能和红外光学性能的影响。利用修正的Ozawa方程计算了玻璃的析晶活化能Ec。研究表明:CsCl含量增加使玻璃的密度ρ和折射率n,Tg,Tx,△T(Tx–Tg)下降,Ec也随之降低;CsCl的引入在一定范围内易导致玻璃析晶;随着CsCl含量的增加,玻璃的近红外短波限产生了略微的蓝移,红外长波截止波长基本无变化。A series of 20GeSe2-（80-x）Sb2Se3-xCsCl（x=2, 4, 6, 8 and 10, in mole） chalcohalide glasses were prepared by conven- tional melt-quenching method. The densities, expansion coefficient, refractive index, characteristic temperatures （such as the transition temperature Tg, onset temperature of crystallization Tx, etc.） were analyzed using thermal expansion and prism-coupled and differential thermal analysis. The effect of CsCl content on the crystallization characteristics and infrared transmission properties of glasses were discussed. The activation energy of crystallization （Ec） were calculated using modified Ozawa equations. The results indicate that the glass density, refractive index, Tg, Tx and （Tx-Tg） decrease with the increasing of CsCl content, as well as the increase of Ec. The glass becomes easily crystallized when CsCl is introduced. With the increase of the CsCl content, the near infrared absorption edge （20） of these glasses indicates a slight blue shift. Additionally, their infrared long-wavelength cut-off edges indicate that nearly no changes take place.

关 键 词：氯化铯 硫系玻璃 氯化铯 熔融-急冷法 析晶动力学 红外 

分 类 号：TQ171[化学工程—玻璃工业]