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US 9,314,727 B2Granted
Cordierite forming batch compositions and cordierite bodies manufactured therefrom
AssigneeCorning Incorporated
InventorsYanxia Lu, Jianguo Wang, Yuming Xie
Life of this patent
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Abstract
Disclosed are cordierite bodies having relatively high porosity and controlled pore size. The porous cordierite bodies generally include a primary cordierite ceramic phase as defined herein. Also disclosed are methods for making and using the cordierite bodies.
Claims6
A microcracked porous cordierite ceramic honeycomb body, comprising:
- a total porosity (% P) of from about 40% to about 50%, where all the pores of the honeycomb body are interconnected;
- a median pore size (d50) in the range of from 2 microns to 10 microns;
- a cell density of 600 to 900 cells per square inch;
- a microcracked density (Nb3) of greater than 0.4;
- and
- a modulus of rupture strength (MOR) of at least 1.52 MPa, wherein the honeycomb body comprises a plurality of parallel cell channels separated by porous cell channel walls having a wall thickness of from 50 to 300 microns, and the coefficient of thermal expansion (CTE) in an axial direction is less than about 3.0×10−7/° C. over from about 25° C. to about 800° C.
3 more elements
Dependencies are inferred from the claim text.