Refractory object and method of forming
AssigneeSaint-Gobain Ceramics & Plastics, Inc.
InventorsDeniz Cetin, Julien P. Fourcade, Olivier Citti, Darren Rogers
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Abstract
A refractory object may include a zircon body that is intentionally doped with a dopant including an alkaline earth element and aluminum. The refractory object can have an improved creep deformation rate. In an embodiment, the refractory object can have a creep deformation rate of not greater than about 1.8 E-5 h−1 at a temperature of 1350° C. and a stress of 2 MPa. In another embodiment, the zircon body may include an amorphous phase including an alkaline earth metal element.
Claims20
A refractory object comprising:
- a zircon body comprising a creep deformation rate of:
- not greater than about 1.8 E-5 h−1 at a temperature of 1350° C. and a stress of 2 MPa;
- less than about 2.7 E-6 h−1 at a temperature of 1275° C. and a stress of 2 MPa;
- less than about 8.8 E-6 h−1 at a temperature of 1325° C. and a stress of 2 MPa;
- less than about 4.5 E-6 h−1 at a temperature of 1300° C. and a stress of 2 MPa;
- or
- any combination thereof,
- wherein the zircon body comprises a crystalline phase comprising mullite, silimanite, andalusite, or any combination thereof, wherein the crystalline phase is at least 0.01 wt % and not greater than 20 wt. % of for a total weight of the zircon body.
A refractory object, comprising a zircon body comprising:
- at least 75 wt. % of zircon for a total weight of the zircon body;
- and
- at least 0.5 wt. % and not greater than 20 wt. % of an amorphous phase for the total weight of the zircon body, wherein the amorphous phase comprises a total content of greater than 3 wt. % of an alkaline earth oxide for a total weight of the amorphous phase.
Dependencies are inferred from the claim text.