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US 2014/0150389 A1Published application
Cordierite aluminum magnesium titanate compositions and ceramic articles comprising same
AssigneeCorning Incorporated
InventorsAdriane Marie Divens-Dutcher, Patrick David Tepesch, Elizabeth Marie Vileno
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Abstract
Disclosed are ceramic bodies comprised of composite cordierite aluminum magnesium titanate ceramic compositions and methods for the manufacture of same.
Claims29
A ceramic article comprising a first crystalline phase comprised predominantly of a solid solution of aluminum titanate and magnesium dititanate and a second crystalline phase comprising cordierite, the article having a composition, as expressed in weight percent on an oxide basis of from 4 to 10% MgO;
- from 40 to 55% Al2O3;
- from 25 to 44% TiO2;
- from 5 to 25% SiO2, and a sintering aid, the sintering aid comprising at least one of calcium oxide and strontium oxide.
A ceramic article, comprising:
- a pseudobrookite phase comprising predominately alumina, magnesia, and titania;
- a second phase comprising cordierite;
- and
- a sintering aid, comprising at least one of a calcium oxide and strontium oxide.
1 more element
A method of manufacturing a ceramic article, comprising:
- providing an inorganic batch composition comprising a magnesia source, a silica source, an alumina source, a titania source, and at least one sintering aid;
- mixing the inorganic batch composition together with one or more processing aid selected from the group consisting of a plasticizer, lubricant, binder, pore former, and solvent, to form a plasticized ceramic precursor batch composition;
- shaping the plasticized ceramic precursor batch composition into a green body;
- and
- firing the green body under conditions effective to convert the green body into a ceramic article comprising a pseudobrookite phase comprising predominately alumina, magnesia, and titania and a second phase comprising cordierite,
- wherein the sintering aid comprises at least one of calcium oxide and strontium oxide.
3 more elements
Dependencies are inferred from the claim text.