Fusion cast refractories NAZS: influence of the Na_2O content on both the phasal composition and the microstructure

摘要

Fusion cast refractories involing Al_2O_3, ZrO_2, SiO_2 and Na_2O(NAZS) are widely used in the glass melting furnace due to their good resistance to chemical corrosion. We have studied compositions of the quaternary system with ZrO_2=34 wt percent, SiO_2=15 wt percent, 48 wt percent