Glaze composition for chemical strengthening of bone china earthenware and manufacturing method of bone china earthenware using the glaze composition

摘要

The present invention relates to a chemical strengthening glaze composition for bone china ceramics and a producing method of bone china ceramics using the same. The chemical composition of the glaze composition, which is enameled on the surface of bone china ceramics and is treated with chemical strengthening to form a chemical strengthening glaze layer, includes 55-63 wt% of SiO_2, 10-14 wt% of Al_2O_3, 1-6 wt% of B_2O_3, 0.1-5 wt% of CaO, 1-6 wt% of MgO, 0.5-4 wt% of K_2O, 10-15 wt% of Na_2O, 0.1-4 wt% of Li_2O, and 1-8 wt% of ZnO as a chemical composition. The present invention is able to suppress the occurrence of fine cracks or scratches on the surface of bone china ceramics and improve mechanical properties such as strength and hardness.