Back to results
US 10,370,304 B2Granted
Fused silica based cellular structures
AssigneeCorning Incorporated
InventorsDouglas Munroe Beall, Cameron Wayne Tanner
Life of this patent
Estimating the term…
Abstract
A porous cellular body comprising primarily a porous sintered glass material is disclosed. The porous sintered glass material primarily includes a first phase and a second phase, the first phase primarily comprising amorphous fused silica and the second phase comprising amorphous fused silica and a sintering aid.
Claims17
An exhaust aftertreatment component comprising:
- a porous honeycomb body comprising a plurality of cells, where the porous honeycomb body comprises primarily a porous sintered glass material having a total porosity of at least 20%, the porous sintered glass material primarily comprising a first phase and a second phase,
- wherein the first phase comprises at least 97% by weight of bonded amorphous silica particles and the second phase comprises at least 50% by weight of amorphous silica and at least 6% by weight of a sintering aid material, wherein the sintering aid material is a boron-containing compound, and
- wherein the first phase and the second phase collectively comprise at least 85% by weight of amorphous silica;
- and
- wherein the exhaust aftertreatment component comprises at least one of a particulate filter and a substrate for supporting a catalyst.
2 more elements
An exhaust aftertreatment component made by a process comprising:
- compounding a plurality of batch constituents to form a precursor batch composition, the batch constituents comprising amorphous fused silica powder and a sintering aid selected from the group consisting of B2O3 and H3BO3;
- forming the precursor batch composition into a cellular green body comprising a porous honeycomb body comprising a plurality of cells;
- and
- subjecting the cellular green body to a heat treatment to make a porous cellular body;
- wherein the porous cellular body comprises primarily a porous sintered glass material comprising primarily a first phase and a second phase,
- wherein the first phase comprises at least 97% by weight of amorphous silica and the second phase comprises at least 50% by weight of amorphous silica and at least 6% by weight of a sintering aid;
- wherein the first phase and the second phase collectively comprise at least 85% by weight of amorphous silica;
- wherein the porous sintered glass material has a total porosity of at least 20%;
- and
- wherein the exhaust aftertreatment component comprises at least one of a particulate filter and a substrate for supporting a catalyst.
7 more elements
Dependencies are inferred from the claim text.