| 摘要 |
New decorating materials suitable for the decoration of ceramic materials comprise a lead-free glass flux and at least one pigment. The glass flux comprises two lead-free glass compositions. One of the two glass compositions comprises, in weight percent, SiO2: 45 to 60%, Al2O3: 5 to 20%, B2O3: 15 to 30%, and one or more alkali metal oxides: 5 to 10%, provided that Li2O is contained in an amount of 2% or more, with the proviso that the total amount of said oxides is 90% or more of the total weight of the composition. The other of the two glass compositions comprises, in weight percent, SiO2: 60 to 75%, Al203: 5 to 20%, at least one of MgO, CaO, ZnO: 5 to 20% in total, and one or more alkali metal oxides: 0.5 to 5%, provided that Li2O is contained in an amount of 0.5% or more, with the provisothat the total amount of said oxides is 90% or more of the total weight of the composition.
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