| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a honeycomb structure which can suppress the increase of an initial pressure loss. <P>SOLUTION: The honeycomb structure includes: a honeycomb base material including a porous partition wall parent material to partition and form a plurality of cells which become through channels of a fluid; plugged portions arranged in openings of predetermined cells in an end surface on an inflow side of the fluid and openings of the remaining cells in an end surface on an outflow side of the fluid; and a porous collecting layer disposed on the surface of the partition wall parent material in the remaining cells. A melting point of a material constituting the collecting layer is higher than that of a material constituting the partition wall parent material, a pore surface area per unit volume of the collecting layer is ≥2.0 times as large as a pore surface area per unit volume of the partition wall parent material, and a thickness of a portion, which penetrates into pores of the partition wall parent material, in the collecting layer is ≤6% of that of each of partition walls including the partition wall parent material and the collecting layer. <P>COPYRIGHT: (C)2013,JPO&INPIT |
