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US 2010/0248951 A1Published application
Honeycomb structure and method for manufacturing honeycomb structure
AssigneeIbiden Co., Ltd.
InventorsKazushige OHNO, Kazunori YAMAYOSE
Life of this patent
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Abstract
A honeycomb structure includes cells and aluminum titanate. The cells are provided substantially in parallel with one another in a longitudinal direction of the honeycomb structure. The cells are each sealed at either one end. The aluminum titanate includes about 40% to about 60% by mass of Al2O3, about 30% to about 50% by mass of TiO2, and about 1% to about 15% by mass of (MgO+SiO2). The honeycomb structure has a porosity of about 40% to about 60% and an aperture ratio of about 55% to about 75%.
Claims22
A honeycomb structure comprising:
- cells provided substantially in parallel with one another in a longitudinal direction of the honeycomb structure, said cells each being sealed at either one end;
- aluminum titanate comprising about 40% to about 60% by mass of Al2O3, about 30% to about 50% by mass of TiO2, and about 1% to about 15% by mass of (MgO+SiO2);
- and
- a porosity of about 40% to about 60% and an aperture ratio of about 55% to about 75%.
1 more element
A method for manufacturing a honeycomb structure, comprising:
- preparing a wet mixture comprising an aluminum titanate powdery material comprising about 40% to about 60% by mass of Al2O3, about 30% to about 50% by mass of TiO2, and about 1% to about 15% by mass of (MgO+SiO2);
- extrusion-molding the wet mixture to form a honeycomb molded body comprising cells provided substantially in parallel with one another in a longitudinal direction of the honeycomb molded body;
- sealing one end of each of the cells of the honeycomb molded body with a plug,
- firing said honeycomb molded body at a temperature of about 1200° C. to about 1700° C. to manufacture the honeycomb structure having a porosity of about 40% to about 60% and an aperture ratio of about 55 to about 75%.
1 more element
Dependencies are inferred from the claim text.