FUSED GRAINS OF OXIDES COMPRISING AL, TI, SI AND CERAMIC PRODUCTS COMPRISING SUCH GRAINS

摘要

Fused grains having the following chemical composition, in weight percentages on the basis of the oxides: more than 15% of Al2O3 and less than 55% of Al2O3, - more than 20% and less than 45% of TiO2, - more than 3% and less than 30% of SiO2, - less than 20%, in total, of at least one oxide chosen from ZrO2, Ce2O3, HfO2, - less than 1% of MgO, - a total sum amount of the oxides CaO, Na2O, K2O, SrO, B2O3, BaO greater than 1% and less than 15%. Ceramic product or material obtained by sintering said grains.