Cordierite aluminum magnesium titanate compositions and ceramic articles comprising same
First Claim
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1. A method of manufacturing a ceramic article, comprising:
- mixing an inorganic batch composition comprising, as expressed in weight percent on an oxide basis, from 4% to 10% of a magnesia source, from 5% to 25% of a silica source, from 40% to 55% of an alumina source, and from 25% to 35% of a titania source 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.
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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.
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11 Claims
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1. A method of manufacturing a ceramic article, comprising:
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mixing an inorganic batch composition comprising, as expressed in weight percent on an oxide basis, from 4% to 10% of a magnesia source, from 5% to 25% of a silica source, from 40% to 55% of an alumina source, and from 25% to 35% of a titania source 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification