| 摘要 |
Lead-free ceramic frits for producing glazes with intrinsic opacity, and methods of coationg ceramic substrates with the ceramic frits, wherein the ceramic frits have the following composition: -SiO2 48-60 wt. % -B2O3 3-8 wt. % -Al2O3 4-8 wt. % -Na2O 0.2-2.0 wt. % -K2O 4-8 wt. % -MgO 0-2 wt. % -CaO 7.5-13 wt. % -BaO 0-5 wt. % -ZnO 7-12 wt. % -ZrO2 0.3-2.5 wt. % -TiO2 3.5-5.5 wt. % -P2O5 0-3 wt. % and -Na2O + K2O 4.5-8.5 wt. %. -
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