COMPOSITION OF GLAZES USING ALUMINA CERAMICS

摘要

Enamel composition for alumina ceramics contains 50-85wt% of silicon dioxide, 5-30wt% of aluminum oxide, 2-20wt% of RO and 5-30wt% of R2O. Here, the weight of each component means the weight that source ore is converted into each component. RO is alkaline earth metal oxide and R2O is alkaline metal oxide. Also the sum between RO and R2O is 7-40wt% and the sum between silicon dioxide and aluminum oxide is 75-90wt%. Accordingly, enamel composition shows stability even at high temperature, improves mechanical strength and has extraordinary vacuum airtightness.