Doped sintered product based on zircon and zirconia

摘要

Sintered product made from an initial feedstock containing zircon (5-50 mass%) and an oxide based chemical composition comprising: silicon dioxide and zirconium dioxide (64 mass%); at least a dopant (0.2 mass%) comprising vanadium pentoxide, niobium pentoxide and/or tantalum pentoxide; optionally a stabilizing agent (= 6 mass%) comprising yttrium oxide, magnesium oxide, calcium oxide and/or cerium dioxide; and other oxides (= 6.7 mass%), is claimed. An independent claim is included for a process for preparing the product comprising mixing raw material to form the initial feedstock, setting in forms of a raw piece with part of the feedstock, and sintering the raw piece to obtain the product.