Low temperature non-crystallizing sealing glass

Details Low temperature non-crystallizing sealing glass Low temperature non-crystallizing sealing glass

1995-09-12

1996-07-09

Group, Karl

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 17, 501 22, 501 26, 501 76, C03C 810, C03C 824

Patent

active

055344690

ABSTRACT:
As a sealing composition which can seal a panel and a funnel of a color CRT at a relatively low temperature for a relatively short time, a non-crystallizing sealing glass essentially consists of PbO--ZnO--B.sub.2 O.sub.3 --Bi.sub.2 O.sub.3 --CS.sub.2 O system and has a thermal expansion coefficient of 80 to 95.times.10.sup.-7 /.degree.C. The sealing glass can be used as a mixture with 40 to 5 volume percent of refractory filler powder. The PbO--ZnO--B.sub.2 O.sub.3 --Cs.sub.2 O system glass consists essentially of, by weight, 65-80% of PbO, 5.5-8% of B.sub.2 O.sub.3, 3-9% of ZnO, 7-22% of Bi.sub.2 O.sub.3, 16% or more of ZnO +Bi.sub.2 O.sub.3, 0.2-1% of SiO.sub.2, 0.3-2% of Fe.sub.2 O.sub.3, and 1.5-4.5% of Cs.sub.2 O. The refractory filler is at least one element selected from tin oxide, lead titanate, and zinc silicate.

REFERENCES:
patent: 4004936 (1977-01-01), Powell
patent: 4774208 (1988-09-01), Ymanaka et al.
patent: 5298329 (1994-03-01), Boatner et al.
patent: 5346863 (1994-09-01), Hakata et al.

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