Sintered materials made from zircon and zirconia

摘要

A sintered zirconia-based material is prepared from a relatively low zircon content charge and having specified zirconium, hafnium, silicon, titanium, yttrium and aluminum oxide contents. A novel sintered material is prepared from a charge containing 5-40% zircon and has the composition (by wt.) 82-96% ZrO2 + HfO2, 1.7-14% SiO2, 0.2-3% TiO2, 0.4-5% Y2O3, 0.2-2.5% Al2O3 and less than 1% other constituents. An Independent claim is also included for production of a shaped body of the above sintered material.