文献类型：期刊文献

英文题名：Formation and properties of novel GeS2-Ga2S3-KBr system glass

作者：Wang, DQ; Chen, W; Cheng, JJ

机构：[1]E China Univ Sci & Technol, Shanghai 200237, Peoples R China

年份：1999

卷号：14

期号：1

起止页码：17

外文期刊名：JOURNAL OF INORGANIC MATERIALS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000078642000003)】；

语种：英文

外文关键词：GeS2-Ga2S3-KBr system glass; chalcohalide glass; glass-forming region; properties

摘要：The glass-forming region of GeS2-Ga2S3-KBr system glass was determined.. The homogeneous glass containing KBr and Ga2S3 up to 25mol% was prepared. The minimum content of GeS2 for glass formation is 50mol%. Glass dehydration temperature T-w, thermal expansion coefficient, ionic conductivity, optical transmission spectra and chemical durability of GeS2-Ga2S3-KBr system glass were investigated. The experimental results show that the highest characteristic temperatures of the glass are. T-w > 284.7 degrees C, T-d = 355 degrees C, T-c = 593 degrees C and Delta T = T-c - T-w > 200 degrees C. The optical transmission of the glass is between 0.45 and 11.5 mu m. The transparent region of the glass shifts towards ultraviolet region by adding KBr. The absorption bands at 3600, 2500 and 1600cm(-1) in infrared spectra can be assigned to the stretching vibration of O-H groups, the stretching vibration of S-H groups and the bending vibration of H-O-H groups. The ionic conductivities of the glass are 10(-9) similar to 10-S-12/cm at 23 degrees C, 10(-4) similar to 10(-6)S/cm at 270 degrees C. The chemical durability of GeS2Ga2S3-KBr system glass is satisfactory. The glass of GeS2-Ga2S3-KBr system could be used as a potential candidate optical material transmitting from visible to mid-infrared regions.