High porosity ceramic honeycomb structure and method of manufacturing
AssigneeCorning Incorporated
InventorsDouglas Munroe Beall, Achim Karl-Erich Heibel, David John Thompson
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Abstract
A method of manufacturing a ceramic honeycomb structure by mixing a ceramic precursor batch composition having a median particle diameter less than or equal to about 10 μm and at least one starch-based pore former having a median particle diameter greater than or equal to about 10 μm. The method also includes forming a mixture of ceramic precursor batch composition and a starch-based pore former into a green ceramic structure having a web structure, and firing the green ceramic structure to yield a ceramic honeycomb structure.
Claims18
A method of manufacturing a ceramic honeycomb structure, comprising:
- forming a cordierite precursor batch composition mixture comprising a combination of constituent materials comprising:
- inorganic particles comprised of magnesia source particles, silica source particles, and alumina source particles, the inorganic particles having a median particle diameter less than or equal to about 10 μm, wherein the inorganic particles comprises spinel particles, and
- at least one starch-based pore former having a median particle diameter greater than or equal to about 10 μm;
- forming the mixture of ceramic precursor batch composition and at least one starch-based pore former into a green body having a honeycomb web structure of intersecting walls;
- and
- firing the green ceramic body to yield the ceramic honeycomb structure comprising a predominant cordierite crystalline phase.
Dependencies are inferred from the claim text.