| 摘要 |
<p>A vitreous china (for sanitary ware, large plates, engineering ceramics etc.) comprises, as principal components, 25 to 70% by weight of a glass phase and 75 to 30% by weight of a crystalline phase, the glass phase comprising, as principal chemical components, 4 to 12% by weight of K2O + Na2O, 50 to 75% by weight of SiO2 and 17 to 40% by weight of Al2O3 based on the total amount of the glass phase, and the crystalline phase comprising, as principal mineral components, 10 to 60% by weight of alpha -alumina, 0 to 20% by weight of quartz and 2 to 20% by weight of mullite based on the total amount of the vitreous china.</p> |
