主权项 |
1. A ceramic frit composition comprising 50 to 60 wt % of SiO2, 1 to 10 wt % of Al2O3, 1 to 10 wt % of MgO, 2 to 15 wt % of CaO, 2 to 10 wt % of Na2O, 2 to 10 wt % of K2O, 2 to 5 wt % of BaO, 0.5 to 2 wt % of Fe2O3, 3 to 8 wt % PbO and 2 to 6 wt % of SrO. |