Ceramic Materials For 4-Way And NOx Adsorber And Method For Making Same
AssigneeCorning Incorporated
InventorsSteven Bolaji Ogunwumi, Cameron Wayne Tanner
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Abstract
Disclosed are ceramic articles comprising a sintered phase ceramic composition containing, as expressed on a weight percent oxide basis: a(Al2TiO5)+b(ZrTiO4)+c(Y2O3)+d(YPO4) wherein “a, b, c, and d” represent weight fractions of each component such that (a+b+c+d)=1.00 and wherein 0.5<a≦0.95; 0≦b≦0.5, 0.0≦c≦0.10, and 0≦d≦0.5. Also disclosed are precursor batch compositions and methods for manufacturing the ceramic articles disclosed herein.
Claims22
A ceramic article, comprising a sintered phase ceramic composition containing, as expressed on a weight percent oxide basis:
- a(Al2TiO5)+b(ZrTiO4)+c(Y2O3)+d(YPO4)
- wherein a, b, c, and d are weight fractions of each component such that (a+b+c+d)=1.00, and
- wherein 0.5<a≦0.95;
- 0≦b≦0.5, 0.0≦c≦0.10, and 0≦d≦0.5.
A method for producing a ceramic article, comprising the steps of:
- providing a plasticized ceramic precursor batch composition containing an alumina source, a titania source, and at least one of a zirconia source, a yttria source, a phosphate source, and a yttrium phosphate source;
- an organic binder;
- and
- a liquid vehicle;
- forming an extruded green body from the plasticized ceramic precursor batch composition;
- and
- firing the formed green body under conditions effective to convert the ceramic precursor composition into a sintered phase ceramic composition.
Dependencies are inferred from the claim text.