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Glass Formation, Properties and Structure of Soda–Yttria–Silica Glasses
Author(s) -
Angel Paul W.,
Hann Raiford E.
Publication year - 1992
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1992.tb04421.x
Subject(s) - thermal expansion , materials science , softening point , softening , refractive index , composite material , yttria stabilized zirconia , vickers hardness test , mineralogy , durability , glass transition , silica glass , microstructure , ceramic , chemistry , cubic zirconia , polymer , optoelectronics
The glass‐formation region of the soda–yttria–silica system was determined. The glasses within this region were measured to have a density of 2.4 to 3.1 g/cm 3 , a refractive index of 1.50 to 1.60, Vickers hardness values of 3.7 to 5.8 GPa, softening temperature between 500° and 780°C, and a coefficient of thermal expansion of 7 × 10 ‐6/o C to 19 × 10 ‐6/o C. Aqueous chemical durability measurements were made on select glass compositions while infrared transmission spectra were used to investigate the glass structure and its effect on glass properties. A compositional region was identified which exhibited high thermal expansion, high softening temperatures, and good chemical durability.