| 摘要 |
This invention is related to the production of glazes and enamels for decorating glass, glass-ceramic, and ceramic articles. The glass frits suitable therefor exhibit good glass stability, coefficients of thermal expansion (20 DEG -300 DEG C.) between about 65-75x10-7/ DEG C., demonstrate excellent resistance to attack by acids and bases, and, being essentially free from toxic heavy metals such as lead, are eminently useful in food preparation and service applications. The frit compositions are encompassed within the system Li2O-BaO-TiO2-ZrO2-B2O3-SiO2, wherein at least one member of the group consisting of MgO, CaO, ZnO, and Bi2O3, is optionally present. Operable frits are encompassed within the ranges, expressed in weight percent, of: -SiO2 35-47% -B2O3 5.5-9 -BaO 24-42 -TiO2 1.5-4 -ZrO2 6-10 -Li2O3 1-5 -MgO 0-5 -CaO 0-4 -SrO 0-8 -ZnO 0-10 -Bi2O3 0-8 -SrO + MgO + CaO + ZnO + Bi2O3 0-10 -
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