IR Transmitting Rare Earth Gallogermanate Glass-Ceramics
Patent, Filed 15 Nov 96, patented 28 Jul 98
DEPARTMENT OF THE NAVY WASHINGTON DC
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A glass-ceramic article or composition which has better thermal and physical properties than the competing materials of zinc sulfide, spinel, or magnesium fluoride comprising 2-30 mole percent yttrium oxide andor rare earth oxide 25-80 mole percent germanium oxide and 5-30 mole percent gallium oxide based on the total moles of yttrium oxide andor the rare earth oxide, germanium oxide, and gallium oxide which article is over 80 by volume crystalline.
- Inorganic Chemistry
- Ceramics, Refractories and Glass