Thermal and mechanical properties of tellurite glasses for mid-IR molded glass lens applications

Linganna K.; Jung-Hwan In; June Park; Ju H. Choi

doi:10.1117/12.2320438

14 September 2018 Thermal and mechanical properties of tellurite glasses for mid-IR molded glass lens applications

Linganna K., Jung-Hwan In, June Park, Ju H. Choi

Proceedings Volume 10742, Optical Manufacturing and Testing XII; 107421L (2018) https://doi.org/10.1117/12.2320438
Event: SPIE Optical Engineering + Applications, 2018, San Diego, California, United States

Abstract

In the present study, zinc molybdenum tellurite glasses with the molar composition of (1−x)TeO₂−yMoO₃−xZnO and (1−x)TeO₂−yMoO₃−xZnO, where x = 10, 20, and 30 mol%, and y = 10 and 20 mol%, were prepared by a high temperature melt quenching technique and studied their thermal, thermo-mechanical and mechanical properties. From the thermal analysis, it was found that the glass transition (T_g), crystallization (T_x) and stability parameters slightly increased with increase in ZnO content in both series of glasses. Thermal expansion coefficient decreases from 16.56 to 14.67×10^-6/K as the ZnO content increases from 10 to 30 mol%. Knoop hardness slightly decreases from 307 to 290 kgf/mm2 with increase in ZnO content from 10 to 30 mol% for 10 mol% of MoO3 content, whereas it increases for 20 mol% of MoO₃. Based on the results, it concludes that the number of bridging oxygens and network compactness of tellurite matrix increased with increase in ZnO content varied from 10 to 30 mol%.

Citation Download Citation

Linganna K., Jung-Hwan In, June Park, and Ju H. Choi "Thermal and mechanical properties of tellurite glasses for mid-IR molded glass lens applications", Proc. SPIE 10742, Optical Manufacturing and Testing XII, 107421L (14 September 2018); https://doi.org/10.1117/12.2320438

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