Plugged honeycomb structure, and manufacturing method of plugged honeycomb structure
AssigneeNGK Insulators, Ltd.
InventorsTakayoshi Shibayama, Masaki Houra, Takayuki Sakamoto, Hiroyuki Suenobu
Life of this patent
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Abstract
A plugged honeycomb structure has a plurality of cells defined by partition walls to become through channels for fluid, one end of each of the predetermined cells is plugged by a plugging member, the other end of each of the residual cells is plugged by the plugging member, the partition wall is made of a cordierite component as a main component, and a value obtained by dividing Young's modulus of a plugging structure portion formed by the partition walls and the plugging member by Young's modulus of a cell structure portion formed by the partition walls is in a range of 1.05 to 2.00.
Claims5
A plugged honeycomb structure having a plurality of cells defined by partition walls to become through channels for a fluid, one end of each of a plurality of predetermined cells of the plurality of cells being plugged by a plugging member, the other end of each of a plurality of residual cells of the plurality of cells being plugged by the plugging member,
- wherein the partition walls are made of a cordierite component as a main component, and the plugging member is made of a ceramic,
- a depth of the plugging member is 2 mm or more and 11 mm or less,
- a porosity of a plugging structure portion is 80% or less, wherein the plugging structure portion is formed by the partition walls and the plugging member,
- a porosity of a cell structure portion is in a range of 42% to 70%, wherein the cell structure portion is formed by the partition walls, and
- a value obtained by dividing a Young's modulus of the plugging structure portion by a Young's modulus of the cell structure portion is in a range of 1.05 to 2.00.
Dependencies are inferred from the claim text.