Bismuth-containing lead-free glass enamels and glazes of low sil

Details Bismuth-containing lead-free glass enamels and glazes of low sil Bismuth-containing lead-free glass enamels and glazes of low sil

1993-08-11

1994-07-05

Bell, Mark L.

Coating processes

Optical element produced

427165, 427163, 4273762, B32D 1706

Patent

active

053265912

ABSTRACT:
This invention relates to a lead-free glass coating made by firing a lead-free glass composition comprising in weight percent from about 35% to about 77% of bismuth oxide, from about 10% to about 33% of boron oxide, and from about 10% to about 32% of zinc oxide at a temperature sufficient to fuse and cure the glass composition. The invention also relates to lead-free glazes and enamels that exhibit excellent acid resistance, possess low coefficients of linear or thermal expansion, and moderate maturation temperatures.

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Chemical Abstracts, vol. 106, No. 6, Feb. 1987, (Columbus, Ohio), p. 289, Abstract 37474.
Unusual Properties and Structure of Glasses In the Systems BiO.sub.3 -B.sub.2 O.sub.3 -SrO; Bi.sub.2 O.sub.3 -B.sub.2 O.sub.3 -BaO; Bi.sub.2 O.sub.3 -ZnO and Bi.sub.2 O-PbO by Janakirama-Rao, Dec. 1965.

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