Non-crystallizing sealing glass composition

Details Non-crystallizing sealing glass composition Non-crystallizing sealing glass composition

C - Chemistry, Metallurgy

03

C

261/11

C03C 3/14 (2006.01) C03C 8/24 (2006.01)

Patent

CA 1165336

ABSTRACT OF THE DISCLOSURE A non-crystallizing sealing glass composition is described consisting essentially of from about 75.50 to 84.00 wt. % lead oxide, from about 11.25 to 14.25 wt. % boron oxide, an additional component selected from the group consisting of up to 3.10 wt. % zinc oxide and up to 9.33 wt. % bismuth oxide; other com- positions could include up to 0.88 wt. % tin oxide, and up to 1.51 wt. % germainium oxide. The glass compositions include .beta.-eucryptite in an amount suf- ficient to provide a coefficient of expansion of about 83.5 to 71.5 X10-70C°-1 (about 13.5 to 17.0 wt. %); the glass is particularly useful in sealing a gas panel.

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