Yellow high silica glass

Details Yellow high silica glass Yellow high silica glass

1992-04-06

1993-09-28

Bell, mark L.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 32, 501 39, C03C 304, C03C 1400, C03C 1100

Patent

active

052486389

ABSTRACT:
A yellow color by transmitted light is produced in a high silica glass by impregnating a porous, high silica glass with a solution of chromium and zinc salts and consolidating the glass under oxidizing conditions to dope the glass with chromium and zinc oxides, the chromium being predominantly in the hexavalent state. Optionally, an aluminum salt is included in the impregnating solution. The glass has particular utility as a filter for lighting purposes.

REFERENCES:
patent: 2215039 (1940-09-01), Hood et al.
patent: 2286275 (1942-06-01), Hood et al.
patent: 2303756 (1942-12-01), Nordberg et al.
patent: 2340013 (1944-01-01), Nordberg et al.
patent: 2355746 (1944-08-01), Nordberg et al.
patent: 2965503 (1960-12-01), Hagedorn et al.
patent: 3188217 (1965-06-01), Elmer et al.
patent: 3188218 (1965-06-01), Elmer et al.
patent: 3258631 (1966-06-01), Elmer et al.
patent: 3399043 (1968-08-01), Elmer et al.
patent: 4073579 (1978-02-01), Deeg et al.
"Colored Glasses" by W. A. Weyl, (1959); Chapter IX and pp. 213 and 233.

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