摘要
通过DSC、XRD、SEM、FT-IR 和显微硬度测试等分析手段,研究了冷却方式对99.75Ge23Se67Sb10G0.25RbI玻璃组织、热稳定性以及光学和力学等性能的影响.结果表明,采用空冷制得的试样在8-12μm 波段红外透过率达70%以上,高于水冷试样（64%）,但由于空冷冷速慢,氢在硒中的固溶度大,导致杂质吸收也大于水冷试样;空冷试样在280 ℃热处理20h可从XRD 检测发现明显Sb2Se3 和GeSe2 的结晶峰,而水冷试样在300℃热处理20h后才能检测到结晶峰;经过热处理,水冷试样的最大KIC值可达到0.414MPa·m1/2,较未热处理值提高了26%,且高于空冷试样的最大KIC（0.368 MPa·m1/2）,因此,水冷试样高温稳定性好,断裂韧性较大,更适合用作微晶化硫系红外玻璃.
The effect of cooling methods on the microstructure,thermal stability,optical and mechanical properties of 99.75Ge23Se67Sb10-0.25 RbI glass were studied by DSC,XRD,SEM,FT-IR and Vickers hardness test in this study.The results indicated that,for air cooled glass,the infrared transmittance at wavelength of 8-12μm was above 70%,which was higher than that of water cooled glass(64%).However,due to the slow cooling rate of air cooled,the solid solubility of hydrogen in selenium increases,thus the absorption of impurities was also stronger than that of water cooled glass.For the thermal-treatment samples,the diffraction peaks of Sb2Se3 and GeSe2crystals can be found at 280℃/20 hfor the glass cooled by air,but at 300℃/20 hfor the glass cooled by water.After thermal treatment,the fracture toughness of water cooled glass can reach to 0.414MPa·m1/2,increased 26% compared with that without thermal treatment,and it was higher than the maximumKIC(0.368MPa·m1/2)of air cooled glass.Consequently,water cooled chalcogenide glass has a higher stability and a better fracture toughness,thus it was more suitable for preparing micro-crystallizing chalcogenide glass.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2015年第17期17092-17096,共5页
Journal of Functional Materials
基金
国家重点基础研究发展计划(973计划)资助项目(2011CB610403
2013CB632904)
国家自然科学基金资助项目(51401156
51301125
51371133)
陕西省教育厅重点实验室科学计划资助项目(13JS041)
陕西省自然科学基金资助项目(2014JM6225)
陕西省薄膜技术与光学检测重点实验室开放基金资助项目(ZSKJ201403)
西安工业大学校长基金资助项目(XAGDXJJ1307)
关键词
硫系玻璃
冷却方式
微晶化
力学性能
chalcogenide glass
cooling method
micro-crystallizing
mechanical property
