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-B2O3-Bi2O3-CS2O system and has a thermal expansion coefficient of 80 to 95×10-7/°C. The sealing g
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-B2O3-Bi2O3-CS2O system and has a thermal expansion coefficient of 80 to 95×10-7/°C. The sealing glass can be used as a mixture with 40 to 5 volume percent of refractory filler powder. The PbO-ZnO-B2O3-Cs2O system glass consists essentially of, by weight, 65-80% of PbO, 5.5-8% of B2O3, 3-9% of ZnO, 7-22% of Bi2O3, 16% or more of ZnO +Bi2O3, 0.2-1% of SiO2, 0.3-2% of Fe2O3, and 1.5-4.5% of Cs2O. The refractory filler is at least one element selected from tin oxide, lead titanate, and zinc silicate.
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A sealing composition comprising, by volume, 60-95% of non-crystallizing sealing glass powder and 40-5% of refractory filler powder, said sealing glass essentially consisting, by weight, of 65-80% of PbO, 5.5-8% of B2 O3, 3-9% of ZnO, 7-22% of Bi2O3, 16% or more of ZnO+Bi2O3, 0.2-1% of SiO2, 0.3-2%
A sealing composition comprising, by volume, 60-95% of non-crystallizing sealing glass powder and 40-5% of refractory filler powder, said sealing glass essentially consisting, by weight, of 65-80% of PbO, 5.5-8% of B2 O3, 3-9% of ZnO, 7-22% of Bi2O3, 16% or more of ZnO+Bi2O3, 0.2-1% of SiO2, 0.3-2% of Fe2O3, and 1.5-4.5% of Cs2O.
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