Sealing glass with high coefficient of absorption for infra-red

Details Sealing glass with high coefficient of absorption for infra-red Sealing glass with high coefficient of absorption for infra-red

1980-01-07

1981-07-07

Vertiz, O. R.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

C03C 304, C03C 310

Patent

active

042772850

ABSTRACT:
This invention is concerned with sealing glasses exhibiting a coefficient of absorption of infra-red radiation within the range of 0.7-4 microns of at least 98%, an average coefficient of thermal expansion over the range of 20.degree.-300.degree. C. between 88-92.5.times.10.sup.-7 /.degree.C., and a volatilization of less than about 200 ppm at the sealing temperature, said glass being essentially free from K.sub.2 O and B.sub.2 O.sub.3 and consisting essentially, in weight percent on the oxide basis as calculated from the batch, of

REFERENCES:
patent: 3672919 (1972-06-01), Sack
patent: 3698921 (1972-10-01), La Grouw et al.
patent: 3814612 (1974-06-01), Inoue et al.
patent: 3949335 (1976-04-01), Morgan
patent: 4001741 (1977-01-01), Lindig et al.

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