C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
25/135, 183/72
C04B 38/00 (2006.01) B01D 25/22 (2006.01) B01D 29/11 (2006.01) B01D 39/20 (2006.01) B01D 46/10 (2006.01) F01N 3/022 (2006.01)
Patent
CA 1201664
ABSTRACT A sintered, honeycomb structure having plugged cell ends is formed in a single sintering step by plugging the cell ends of a sinterable honeycomb structure with an appropriate material which, when heated to the sintering temperature of the structure and compared with any dimensional changes the structure undergoes during its sintering, provides a rela- tive expansion of the plugs with respect to the structure of between about 1.5% and 7% and, preferably, between about 2 and 4%. Various exemplary batch mixtures are identified for fabri- cating solid particulate filter bodies from extruded ceramic substrates in which both the substrate and plugs sinter to primarily cordierite crystal phases at temperatures between about 1340°C. and 1450°C.
407173
Hillman Arthur E.
Paisley Robert J.
Corning Glass Works
Gowling Lafleur Henderson Llp
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