| http://www.w3.org/ns/prov#value | - A selenide glass with improved mechanical and optical properties such as ended transmission in the infrared region of radiation having wavelengths beyond 15 microns; Tg in the region of 363???-394??? C.; and thermal stability of 85???-145??? C. based on the difference between Tg and Tx, comprising, on mol basis, 20-70% germanium selenide, 0.5-25% gallium selenide, indium selenide or mixtures there
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