| abstract |
A refractory object can include Al 2 O 3 at a content in a range of approximately 10 wt% Al 2 O 3 to approximately 94 wt% Al 2 O 3 ; SiO 2 at a content of at least approximately 1.1 wt% SiO 2 ; an additive at a content of at least 0.2 wt% additive. The additive can include TiO 2 , Y 2 O 3 , CaO, MgO, or any combination thereof. The creep rate of the refractory object can be no greater than approximately 1 x 10 -4 h -1 . |