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Effect of ZnO and MoO 3 Addition on Thermal and Mechanical Properties of Tellurite Glasses
Author(s) -
Linganna Kadathala,
Park June,
Choi Ju Hyeon
Publication year - 2019
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201801013
Subject(s) - materials science , knoop hardness test , thermal expansion , molybdenum , thermal stability , zinc , glass transition , crystallization , thermal , analytical chemistry (journal) , composite material , chemical engineering , indentation hardness , microstructure , metallurgy , polymer , chemistry , thermodynamics , physics , chromatography , engineering
In the present study, zinc‐molybdenum‐tellurite glasses are prepared and their thermal, thermo‐mechanical, viscous, and mechanical properties for mid‐IR molded glass lens applications are studied. From the thermal analysis, it is found that the glass transition temperature, onset crystallization temperature, and stability parameters slightly increase with an increase in ZnO content in both series of glasses. Thermal expansion coefficient decreases from 16.56 to 14.67 × 10 −6 K −1 as the ZnO content increased from 10 to 30 mol%. For fixed 10 mol% of MoO 3 content, Knoop hardness slightly decreases from 3009 to 2842 MPa as ZnO content increases from 10 to 30 mol% whereas it increases for 20 mol% of MoO 3 . The results indicate that the addition of ZnO and MoO 3 contents into the tellurite glass system increases bridging oxygen contribution and in turn network compactness of tellurite matrix.