摘要
本文研究了GeS_2－Ga_2S_3－KBr系统玻璃的形成范围．根据玻璃的红外光谱、可见光谱、特征温度、热膨胀、电导、析晶和耐水性测试结果，该系统玻璃具有较宽的透过波段（0．45～11．5μm），透过率大于60％；较高的转变温度、热膨胀软化温度（355℃）和析晶温度（593℃）；23℃时玻璃的电导率为10^(-9)～10^(-12)S／cm，270℃时电导率为10^(-4)～10^(-6)s／cm；玻璃耐水性较好．
The glass-forming region of GeS2-Ga2S3-KBr system glass was determined. The homogeneousglass containing KBr and GabS3 up to 25mol% was prepared. The minimum content of GeS2 forglass formation is 50mol%. Glass dehydration temperature Tw, thermal expansion coefficient, ionicconductivity, optical transmission spectra and chemical durability of GeS2-Ga2S3-KBr system glasswere investigated. The experimental results show that the highest characteristic temperatures ofthe glass are Tw > 284.7℃, Td=355℃, To= 593℃ and AT = To - Tw > 200℃. The opticaltransmission of the glass is between 0.45 and 11.5pm. The transparent region of the glass shiftstowards ultraviolet region by adding KBr. The absorption bands at 3600, 2500 and 1600cm(-1) ininfrared spectra can be assigned to the stretching vibration of O-H groups, the stretching vibrationof S-H groups arid the bending vibration of H-O-H groups. The ionic conductivities of the glassare 10(-9) 10(-12)S/cm at 23℃, 10（-4）10-6S/cm at 270℃. The chemical durability of GeS2GaZS3-KBr system glass is satisfactory. The glass of GeS2-GabS3-KBr system could be used as apotential candidate optical material transmitting from visible to mid-infrared regions.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
1999年第1期17-22,共6页
Journal of Inorganic Materials
基金
上海市应用材料研究与发展基金!9502
关键词
玻璃形成区
硫系玻璃
红外光学材料
GeS_2-Ga_2S_3-KBr system glass, chalcohalide glass, glass-forming region, properties
