Refractory articles and methods for forming same
AssigneeSaint-Gobain Ceramics & Plastics, Inc.
InventorsAllan R. Case, Edmund A. Cortellini, Hansong Huang, Melanie Kuhn, Nancy F. Levoy, Wesley S. Towle
Life of this patent
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Abstract
A refractory article can include a body including a content of alumina of at least 60 wt %, a content of silica of not greater than 20 wt %, a content of zirconia of not greater than 20 wt % for a total weight of the body. In a particular embodiment, the body includes a third phase including composite grains including mullite and zirconia. The third phase including the composite grains can be present within a range including at least 1 wt % and not greater than 35 wt % for a total weight of the body.
Claims18
A refractory article comprising:
- a body including:
- a content of alumina (Al2O3) within a range including at least 60 wt % and not greater than 95 wt % for a total weight of the body;
- a content of silica (SiO2) within a range including at least 2 wt % and not greater than 20 wt % for a total weight of the body;
- a content of zirconia (ZrO2) within a range including at least 0.1 wt % and not greater than 2.5 wt % for a total weight of the body;
- a phase comprising composite grains including mullite and zirconia, the phase present within a range including at least 1 wt % and not greater than 35 wt % for a total weight of the body.
Dependencies are inferred from the claim text.