Choi Ju H, Lee Jun Ho, Choi Yong Gyu, Kim Jeong-Ho, Kim Hye-Jeong
J Nanosci Nanotechnol. 2016 Feb;16(2):1603-6. doi: 10.1166/jnn.2016.11961.
Chalcogenide glass lens have been attracted because of excellent optical properties and low cost fabrication methods, i.e., glass molding press. Molded glass lens should have unique thermal, optical and mechanical properties in order to be applied to molding process. One of the weaknesses of chalcogenide glass lens has low hardness relatively compared with crystalline lens. In order to improve the mechanical properties, the chalcogenide glass samples were thermally treated leading to form nano crystalline phase. The relations between mechanical properties and nano crystalline phases were studied. The nano crystalline phase were controlled with the thermal treatment condition and confirmed.by scanning electron microscopy and x-ray diffraction. The hardness was characterized by a Knoop hardness tester. The transmission properties according to thermal treatment condition were characterized by FT-IR spectrometer. Finally, the chalcogenide glass system after optimized thermal treatment shows approximately 10% of increase in hardness as well as above 56% average transmittance in the range of 8~12 microm.
硫系玻璃透镜因其优异的光学性能和低成本制造方法（即玻璃模压）而受到关注。模制玻璃透镜为了能应用于模制工艺，应具备独特的热学、光学和机械性能。硫系玻璃透镜的一个弱点是与晶体透镜相比硬度相对较低。为了改善机械性能，对硫系玻璃样品进行热处理以形成纳米晶相。研究了机械性能与纳米晶相之间的关系。通过热处理条件控制纳米晶相，并通过扫描电子显微镜和X射线衍射进行确认。用努氏硬度计表征硬度。根据热处理条件的透射性能用傅里叶变换红外光谱仪进行表征。最后，经过优化热处理后的硫系玻璃体系显示硬度提高了约10%，并且在8至12微米范围内平均透过率高于56%。
