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US 11,078,121 B2Granted
High cordierite-to-mullite ratio cordierite-mullite-aluminum magnesium titanate compositions and ceramic articles comprising same
AssigneeCorning Incorporated
InventorsMonika Backhaus-Ricoult, Patrick David Tepesch, Bryan Ray Wheaton
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Abstract
Disclosed are ceramic bodies comprised of composite cordierite-mullite-aluminum magnesium titanate (CMAT) ceramic compositions having high cordierite-to-mullite ratio and methods for the manufacture of same.
Claims6
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 aids comprising at least one of a plasticizer, lubricant, binder, pore former, and solvent to form a ceramic precursor batch composition;
- shaping the 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 alumina, magnesia, and titania, a second phase comprising cordierite, and a third phase comprising mullite,
- wherein the cordierite-to-mullite phase ratio is greater than or equal to 1.3 and less than or equal to 2.5.
3 more elements
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 aids comprising at least one of a plasticizer, lubricant, binder, pore former, and solvent to form a ceramic precursor batch composition;
- shaping the 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 alumina, magnesia, and titania, a second phase comprising cordierite, and a third phase comprising mullite,
- wherein the cordierite-to-mullite phase ratio is greater than or equal to 1.3 and less than or equal to 7.
3 more elements
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 aids comprising at least one of a plasticizer, lubricant, binder, pore former, and solvent to form a ceramic precursor batch composition;
- shaping the 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 alumina, magnesia, and titania, a second phase comprising cordierite, and a third phase comprising mullite,
- wherein the cordierite-to-mullite phase ratio is greater than or equal to 1.3 and less than or equal to 4.
3 more elements
Dependencies are inferred from the claim text.