Accession Number : ADD018324

Title :   IR Transmitting Rare Earth Gallogermanate Glass-Ceramics.

Descriptive Note : Patent Application, Filed 15 Nov 96,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Harbison, Barry B ; Sanghera, Jasbinder S ; Aggarwal, Ishwar D ; Bayya, Shyam S

PDF Url : ADD018324

Report Date : 15 Nov 1996

Pagination or Media Count : 17

Abstract : 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 and/or rare earth oxide, 25-80 mole percent germanium oxide, and 5-30 mole percent gallium oxide, based on the total moles of yttrium oxide and/or the rare earth oxide, germanium oxide, and gallium oxide; which article is over 80% by volume crystalline.

Descriptors :   *PATENT APPLICATIONS, *GLASS, TRANSPARENCE, CORROSION RESISTANCE, INFRARED OPTICAL MATERIALS, CRYSTAL GROWTH, INFRARED SPECTRA, GALLIUM COMPOUNDS, THERMAL SHOCK, YTTRIUM OXIDES, GERMANIUM COMPOUNDS, OPTICAL GLASS

Subject Categories : Ceramics, Refractories and Glass

Distribution Statement : APPROVED FOR PUBLIC RELEASE