Honeycomb structure and method for its manufacture
AssigneeNGK Insulators, Ltd.
InventorsShuichi Ichikawa, Takahiro Tomita, Shinji Kawasaki, Hiroaki Sakai
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Abstract
A honeycomb structure having a large number of channels through along the axial direction and being defined by partition walls. A honeycomb structure containing a refractory particle to be an aggregate and metallic silicon and being porous. This honeycomb structure can be suitably used under high SV conditions as a filter for purifying automobile exhaust gas by treatment such as clogging or catalyst supporting.
Claims24
A honeycomb structure having a large number of channels through along the axial direction and defined by partition walls, wherein the structure is porous and includes refractory particles and metallic silicon, wherein the refractory particles are bonded via said metallic silicon in part of the refractory particle surface as a non-continuous coating, thereby forming an aggregate.
A method for manufacturing a honeycomb structure having a large number of channels through along the axial direction and defined by partition walls, and the structure is porous and includes refractory particles and metallic silicon that form an aggregate by bonding of the refractory particles via the metallic silicon in part of the refractory particle surface as a non-continuous coating, wherein the method involves adding metallic silicon in such a sufficient amount that the metallic silicon remains in a required amount even after burning and an organic binder to the raw material of refractory particles, mixing and kneading it, forming the resulting body for ceramics into a honeycomb shape, calcining the obtained molded body to remove the organic binder in the molded body, and subsequently burning.
Dependencies are inferred from the claim text.