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US 11,814,317 B2Granted
Refractory article and method of making
AssigneeSaint-Gobain Ceramics & Plastics, Inc.
InventorsOlivier Citti, Wesley S Towle, David J. Lechevalier
Life of this patent
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Abstract
A refractory article includes a body including a ceramic having an aluminosilicate present in an amount of at least 70 wt % and not greater than 99 wt % for a total weight of the body, and the body further includes a dopant including a Mg-containing oxide compound and a Fe-containing oxide compound, and the dopant is present in an amount within a range including at least 1 wt % and not greater than 12 wt %.
Claims6
A refractory article comprising:
- a body including a ceramic consisting of:
- mullite present in an amount of at least 93 wt % and not greater than 97 wt % for a total weight of the body;
- and
- a dopant consisting of a combination of MgAl2O4 and Fe3O4, wherein the dopant is present in an amount of at least 3 wt. % and not greater than 7 wt. % for a total weight of the body,
- wherein the body comprises an average relative emissivity over a wavelength of 0.5 microns to 5 microns of at least 0.8 and not greater than 0.99, and
- wherein the body comprises a melting temperature of at least 1600° C. and not greater than 3200° C.
3 more elements
Dependencies are inferred from the claim text.