Abstract:

Nowdays low temperature firing technology is an effective way to save energy,reduce fuel consumption and im-prove production efficiency in the ceramic industry,therefore,in the low temperature condition,preparation of ceramic glaze is increasingly becoming a research hotspot.To descend firing temperature,Na₃PO₄ was taken place of SiO₂ in the ceramic glaze to form liquid phase in low temperature,and the basic glaze was successfully prepared at 890 ℃.When mass fraction of Na₃PO₄ was reached to 33.25%,firing temperature of the basic glaze had reduced by 290 ℃.Glaze surface and fracture of samples were characterized by field-emission scanning electron microscopy.Na₃PO₄ could markedly decrease firing tempera-ture of ceramic glaze.Furthermore,red ceramic glaze had been prepared by adding coloring agent to the basic glaze in low tem-perature condition,and firing temperature had reduced by 350 ℃.The experimental results showed that Na₃PO₄ had played an important role of descending temperature in preparation process of ceramic glaze in the low temperature condition.Therefore,these research results would be helpful for future research of ceramic color glaze.

Key words: glaze, low temperature, Na₃PO₄, coloring agent