Patent ID: 9573850
Date: 2017-02-21
CPC Classifications: C03B,C04B

Claim:
1. A sintered product made from a starting batch containing a dopant selected from the group consisting of Nb 2 O 5 , Ta 2 O 5 , precursors thereof, and mixtures of such dopants and/or precursors thereof, and 5 to 50% zircon, in percentage by weight on the basis of the dry starting batch weight, and having the following average chemical composition, in percentages by weight on the basis of the oxides and for a total of 100%: silica, SiO at least 0.2% of a dopant selected from the group consisting of Nb optionally, a stabilizer selected from the group consisting of Y other oxides at a content of 6.7% or less.