| 摘要 |
<p>A fused-cast-alumina-zirconia-silica refractory consisting essentially of corundum crystals, baddeleyite crystals and a matrix glass phase and having a chemical composition comprising (a) from 30 to 70 wt% of Al2O3, (b) from 20 to 59 wt% of ZrO2, (c) from 5 to 12 wt% of SiO2, (d) from 0.15 to 0.60 wt% of Na2O, (e) from 0 to 0.50 wt% of K2O, (f) from 0 to 0.40 wt% of Li2O, (g) from 0.05 to 0.80 wt% of B2O3, (h) from 0.05 to 0.80 wt% of P2O5, and (i) from 0.05 to 0.50 wt% in total of at least one member selected from the group consisting of SnO2, ZnO, CuO and MnO2.</p> |
