摘要:
A honeycomb filter 20 includes a plurality of porous partition portions 22 each forming a cell 23, the cell 23 being open at one end and closed at the other end and serving as a flow path of an exhaust gas, and a trapping layer 24 for trapping and removing solid components contained in the exhaust gas, the trapping layer 24 being formed on each of the partition portions 22. In a honeycomb segment 21, the trapping layers 24 are formed such that the ratio A/B of the thickness A ( µ m) of the trapping layer 24 formed on each of outermost partition portions 22a to the thickness B ( µ m) of the trapping layer 24 formed on each of partition portions 22b in an inner region is 60% or less.
摘要:
A honeycomb structure 20 according to the present invention is produced by a method for manufacturing a honeycomb structure, the method including the steps of burying a burial base material into pores of a porous honeycomb base material which is provided with a partition portion 22 constituting a plurality of cells 23 and which has a SiC phase and an oxide phase containing a Si oxide, where the burial base material contains metal Si particles having a particle diameter smaller than the pore diameter of the pore and metal Al particles having a particle diameter smaller than the pore diameter of the pore, and melting the metal Si particles and the metal Al particles, which are contained in the burial base material, by heating the porous honeycomb base material including the buried burial base material in an inert atmosphere, so as to form a metal phase containing metal Si and metal Al in pores of the porous honeycomb base material.