Abstract:
Sealing glass which may be used for sealing glass plates together at relatively low temperatures. The glass has a softening temperature of about 412*C and has a thermal coefficient of expansion (from room temperature to 300*C) of about 84 X 10 7 per *C. The glass consists substantially of the following constituents in the following proportions: Percent by weight PbO 66.0 B2O3 14.0 ZnO 10.5 SiO2 2.0 CuO 2.5 Bi2O3 1.5 Al2O3 3.
Abstract:
A family of dielectric glasses having properties such that, when heat is applied to seal the dielectric glasses, there is no crazing in a MgO overcoat. These dielectric glasses have such viscosity properties as not to craze a MgO overcoat in the range 455 to 505*C corresponding to log viscosity of 10.3 poises and yet fire into good dielectric films at about 600*C. The glass has substantially the following constituents:
Abstract:
A method of applying a dielectric glass to a glass substrate comprising the steps of (1) coating the dielectric onto the substrate, (2) reflowing the dielectric in an ambient of wet oxygen, and (3) soaking the dielectric in dry oxygen.