| abstract |
A sintered product made from a starting batch containing 5 to 50% zircon and having the following average chemical composition, in weight percentages on the basis of the oxides and for a total of 100%:n silica and zirconia, the zirconia content (ZrO 2 ) being at least 64%, at least 0.2% of a dopant selected from V 2 O 5 , Nb 2 O 5 , Ta 2 O 5 , and mixtures thereof, optionally, a stabilizer selected from Y 2 O 3 , MgO, CaO, CeO 2 , and mixtures thereof, at a content of 6% or less, “other oxides” at a content of 6.7% or less. |