Porous ceramic article and method of manufacturing the same
AssigneeCorning Incorporated
InventorsMonika Backhaus-Ricoult, Christopher Raymond Glose
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Abstract
The present disclosure relates to porous ceramic articles and a method of making the same. The porous ceramic articles have microstructure of sinter bonded or reaction bonded large pre-reacted particles and pore network structure exhibiting large pore necks. The method of making the porous ceramic articles involves using pre-reacted particles having one or more phases. A plastic ceramic precursor composition is also disclosed. The composition includes a mixture of at least one of dense, porous, or hollow spheroidal pre-reacted particles and a liquid vehicle.
Claims23
A porous ceramic body, comprising:
- a microstructure of solid matter and a network of contiguous pores with large pore necks;
- a permeability of greater than or equal to 1000;
- a porosity greater than or equal to 50%;
- a median pore size (d50) greater than 10 μm;
- a coefficient of thermal expansion (CTE) in a range of 2×10−7K−1 to 20×10−7K−1 from room temperature (20° C.) to 800° C.;
- a strain tolerance greater than 0.10%;
- and
- an MOR greater than 170 psi for a honeycomb geometry (300/14) or equivalent.
A porous ceramic body, comprising:
- a microstructure of sinter bonded or reaction bonded large pre-reacted particles and pore network structure exhibiting large pore necks,
- wherein the sinter bonded or reaction bonded large pre-reacted particles comprise a homogeneous phase mixture or a phase distribution of reaction product layers and green phases.
Dependencies are inferred from the claim text.