Honeycomb structure and method for manufacturing honeycomb structure
AssigneeIbiden Co., Ltd.
InventorKazuaki Sakakibara
Life of this patent
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Abstract
A honeycomb structure includes a ceramic block and a sealing material layer. The ceramic block includes a plurality of honeycomb fired bodies each having a large number of cells longitudinally disposed substantially in parallel with one another with a cell wall between the cells, an adhesive layer for bonding side faces of the honeycomb fired bodies, and a cavity-holding member placed between the side faces of the honeycomb fired bodies. The sealing material layer is formed on a peripheral face of the ceramic block. The cavity-holding member includes a nonflammable material having Young's modulus of at least about 0.001 GPa and at most about 0.07 GPa.
Claims22
A method for manufacturing a honeycomb structure, the method comprising:
- molding a ceramic raw material to manufacture a honeycomb molded body having a plurality of cells longitudinally disposed substantially in parallel with one another with a cell wall between the cells;
- firing said honeycomb molded body to manufacture a honeycomb fired body;
- and
- bonding a plurality of said honeycomb fired bodies to manufacture a ceramic block by placing a cavity-holding member between side faces of said honeycomb fired bodies, forming an adhesive paste layer, and then, solidifying the adhesive paste layer by heating,
- wherein said cavity-holding member has a substantially rectangular pillar shape and has a substantially same thickness as a thickness of the adhesive paste layer,
- wherein said cavity-holding member comprises a nonflammable material which is nonflammable at a temperature of about 700° C., the nonflammable material comprising a fibrous paper or an inorganic material sheet each comprising fibers and inorganic particles,
- wherein the cavity-holding member has Young's modulus of at least about 0.001 GPa and at most about 0.02 GPa,
- wherein the cavity-holding member has a density of at least about 0.8 g/cm3 and at most about 2.0 g/cm3,
- wherein the material of the cavity-holding member is a different material from that of the adhesive paste layer,
- wherein said fibers contained in the cavity-holding member are selected from a group consisting of zirconia fibers, calcium silicate fibers, magnesium silicate fibers, rock wool, and
- wherein the adhesive paste layer includes inorganic fibers selected from a group consisting of silica-alumina fibers, mullite fibers, alumina fibers and silica fibers.
A method for manufacturing a honeycomb structure, the method comprising:
- molding a ceramic raw material to manufacture a honeycomb molded body having a plurality of cells longitudinally disposed substantially in parallel with one another with a cell wall between the cells;
- firing said honeycomb molded body to manufacture a honeycomb fired body;
- and
- bonding a plurality of said honeycomb fired bodies to manufacture a ceramic block by placing a cavity-holding member between side faces of said honeycomb fired bodies, forming an adhesive paste layer, and then, solidifying the adhesive paste layer by heating,
- wherein said cavity-holding member has a substantially rectangular pillar shape and has a substantially same thickness as a thickness of the adhesive paste layer,
- wherein said cavity-holding member comprises a nonflammable material which is nonflammable at a temperature of about 700° C., the nonflammable material comprising a fibrous paper or an inorganic material sheet each comprising fibers and inorganic particles,
- wherein the cavity-holding member has Young's modulus of at least about 0.001 GPa and at most about 0.02 GPa,
- wherein the cavity-holding member has a density of at least about 0.8 g/cm3 and at most about 2.0 g/cm3,
- wherein the material of the cavity-holding member is a different material from that of the adhesive paste layer,
- wherein said fibers contained in the cavity-holding member are selected from a group consisting of alumina fibers, zirconia fibers, alumina-silica fibers, silica fibers, glass fibers, calcium silicate fibers, magnesium silicate fibers, rock wool, glass wool, and
- wherein the adhesive paste layer includes inorganic fibers selected from a group consisting of mullite fibers.
Dependencies are inferred from the claim text.