Effect of ZrO2 Additives on the Thermal Shock Resistance of MgO—MA Refractory

摘要

The additirn of three kins ZrO2-bearing additives into MgO-MA refractory could all increase the latter's C.C.S.and the thermal shock resistance,XRD,polarizing microscope and electron probe analysis were used to analyze the mechanism to improve the thermal shock resistance of the material.The mechanism is that ZrO added into the material improves the microstructure,introduces asppropriate micro cracks into matrix ,enhances the matrix,and therefore increases the thermal shock resistance of ther refractory.