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US 8,999,484 B2Granted
Compositions and methods for plugging honeycomb bodies with reduced plug depth variability
AssigneeCorning Incorporated
InventorsColby William Audinwood, Anthony Joseph Cecce, Toka M Culbertson, Courtney Spencer Warren
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Abstract
A composition for applying to a honeycomb body includes a refractory filler, an organic binder, an inorganic binder, and a liquid vehicle, wherein the refractory filler, the particle size distribution of the refractory filler, the organic binder, and the inorganic binder are selected such that, when the composition is applied to plug a plurality of channels of the honeycomb body, the plug depth variability is reduced.
Claims7
A porous ceramic honeycomb body comprising a plurality of parallel channels bounded by porous ceramic channel walls,
- wherein selected channels comprise plugs permanently sealed to the channel walls,
- wherein the plugs comprise a refractory filler of at least one inorganic powder having a particle size distribution and an inorganic binder,
- wherein the inorganic powder has a D10 of at least 8 microns,
- wherein the inorganic powder has a D90 of at least 65 microns, and
- wherein the refractory filler, the particle size distribution of the refractory filler, and the inorganic binder are selected such that the plugs have an average plug depth and a depth range, such that for channels of a given cross-sectional size, the depth range is less than 30% of the average plug depth.
2 more elements
Dependencies are inferred from the claim text.