摘要
系统研究了含有一价碱金属卤化物的Ｇａ２Ｓ３－ＧｅＳ２－ＫＣｌ系统玻璃的制备与形成区，某些典型玻璃的光学和物理化学性质。结果表明：玻璃的透过范围为０．４２～１１．５μｍ，转变温度可达２６０～３００℃，玻璃的密度为２．６５０～２．８７０ｇ／ｃｍ３，膨胀系数为１００×１０－７～１８０×１０－７°Ｃ－１，显微硬度为１６００～１９００Ｎ／ｍｍ２，玻璃具有较好的耐水性。玻璃的电导率在２３℃时为１０－１０～１０－１１Ｓ／ｃｍ；２７０℃时为１０－５～１０－８Ｓ／ｃｍ。还从结构上讨论了性质变化的规律。
Besides the application for optical materials transmitting in midfarinfrared region, chalcohalide glasses have recently received more and more attention in their uses as nonlinear photonic materials because they share high thirdorder nonlinear polarizability. For this purpose, glass forming region of new Ga2S3GeS2KCl system was studied and a series of this ternary system glasses was obtained. Binary system glasses may be formed by combining GeS2 with Ga2S3, the Ga2S3 content is 0.10. Binary GeS2KCl system do not form vitreous state. The contents in Ga2S3 and KCl for ternary system glasses exceed 0.30 respectively. Some typical glasses were selected to study their optical, electronic, physical and chemical properties. The shortwave absorption edge was found to shift from 480 nm to wards the shorter wavelength (410 nm) by KCl doping while the multiphonon absorption of glasses is about 11.5 μm. About 60%～80% transmittance of glasses (thinckness: 4 mm) was observed within 0.5～10 μm. The conductivity of glasses is 10-10～10-11 S/cm at 23℃ or 10-5～10-8 S/cm at 270℃. The transition temperature of the glasses range from 260 to 300℃. The density and microhardness of the glasses are 2.659～2.870 g/cm3 and 1 600～1 900 N/mm2 respectively. The chemical stability of glasses in distilled water were demonstrated satisfied.
出处
《华东理工大学学报（自然科学版）》
CAS
CSCD
北大核心
1998年第4期467-471,483,共6页
Journal of East China University of Science and Technology
基金
上海市应用材料发展基金
关键词
硫卤玻璃
玻璃形成
玻璃性质
红外材料
chalcohalide glass
glassforming
glass properties
infrared materials
