Patent ID: 11890609
Assignee: CORNING INCORPORATED
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 15:
16. A method for treating a honeycomb body, the honeycomb body comprising a skin surrounding a matrix of cells defined by a plurality of intersecting wall, the method comprising:
applying a buffer solution to only an exterior surface of the skin, wherein the buffer solution is an aqueous solution comprising one or more of: ammonium chloride, ammonium nitrate, ammonium acetate, ammonium hydroxide, potassium phosphate, sodium hydroxide, boric acid, potassium chloride, sodium chloride, potassium carbonate, potassium borate, potassium hydroxide, hydrochloric acid, or potassium acid phthalate;
coating the exterior surface of the skin with an oxide slurry, the oxide slurry comprising an oxide or a precursor of the oxide to deposit inorganic particles in pores of a porous material of the skin, wherein the oxide comprises alumina, silica, Mania, zirconia, ceria, or aluminum silicate; and
drying the honeycomb body,
wherein the method increases an isostatic strength of the honeycomb body by 40% or more relative to an isostatic strength of the honeycomb body prior to application of the oxide slurry.