Alkali bismuth gallate glasses

Details Alkali bismuth gallate glasses Alkali bismuth gallate glasses

1991-04-26

1992-05-19

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 43, 501904, C03C 312, C03C 323, C03C 408

Patent

active

051148846

ABSTRACT:
This invention relates to the preparation of thermally stable, chemically durable, heavy metal oxide glasses exhibiting good transmission of infrared radiation to wavelengths of about 7 microns consisting essentially, in weight percent, of 7.5-25% Ga.sub.2 O.sub.3, 70-92% Bi.sub.2 O.sub.3, and 0.25-12% R.sub.2 O, wherein R.sub.2 O consists of at least one alkali metal oxide selected from the group consisting of Na.sub.2 O and K.sub.2 O.

REFERENCES:
patent: 4456692 (1984-06-01), Dumbaugh, Jr. et al.
patent: 4483931 (1984-11-01), Dumbaugh, Jr. et al.

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