Cordierite Aluminum Magnesium Titanate Compositions And Ceramic Articles Comprising Same
First Claim
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1. 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, wherein the ceramic article comprises a total porosity % P greater than 40% by volume.
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Abstract
Disclosed are ceramic bodies comprised of composite cordierite aluminum magnesium titanate ceramic compositions and methods for the manufacture of the same.
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20 Claims
- 1. 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, wherein the ceramic article comprises a total porosity % P greater than 40% by volume.
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11. A method of manufacturing a ceramic article, comprising the steps of:
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providing an inorganic batch composition comprising a magnesia source, a silica source, an alumina source, and a titania source; 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 first crystalline phase comprised predominantly of a solid solution of aluminum titanate and magnesium dititanate and a second crystalline phase comprising cordierite, wherein the ceramic article comprises a total porosity % P greater than 40% by volume. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification