Ibiden Company Limited

Hiroki Sato

Kazushige Ohno

Masayuki Hayashi

Yuki Fujita

Masafumi Kunieda

Kazutake Ogyu

Teruo Komori

Sungtae Hong

Yukio Oshimi

Masaki Imaeda

Kazuaki Sakakibara

Seiji Tamura

Ikuhito Teshima

Hikaru Yoshida

Takehiro Umemoto

A honeycomb structural body includes at least one honeycomb unit including a &#x3b2; type zeolite, a phosphate group zeolite, and an inorganic binder and having a plurality of through holes divided by partition walls and arranged in a longitudinal direction of the honeycomb unit. The &#x3b2; type zeolite includes secondary particles having an average particle diameter of approximately 0.5 &#x3bc;m or more and approximately 5 &#x3bc;m or less. The phosphate group zeolite includes primary particles having an average particle diameter of approximately 0.5 &#x3bc;m or more and approximately 5 &#x3bc;m or less. A ratio of a mass of the phosphate group zeolite with respect to a total mass of the &#x3b2; type zeolite and the phosphate group zeolite is approximately 5% or more and approximately 35% or less.

Honeycomb structural body and exhaust gas conversion apparatus

A method for manufacturing a honeycomb structural body having a honeycomb unit includes obtaining a honeycomb molded body including a compound containing a phosphate group zeolite and an inorganic binder. The honeycomb molded body has a plurality of through holes that are defined by cell walls and arranged in a longitudinal direction of the honeycomb molded body. The honeycomb molded body is dried. The dried honeycomb molded body is fired to obtain the honeycomb unit. At least one of the honeycomb unit and the dried honeycomb molded body is stored so that a difference in moisture content is approximately 5 mass % or less between a moisture content of the cell walls at a center part of a cross section perpendicular to the longitudinal direction and a moisture content of the cell walls at an outer periphery part of the cross section perpendicular to the longitudinal direction.

Method for manufacturing honeycomb structural body and method for manufacturing exhaust gas converting apparatus

A ceramic porous sintered body including a plurality of ceramic coarse particles and a polycrystalline sintered body forming a bonding layer. The bonding layer exists between the ceramic coarse particles and connects the ceramic coarse particles. The polycrystalline sintered body includes a plurality of ceramic fine particles having an average particle size smaller than the ceramic coarse particles. The ceramic porous sintered body has an average pore diameter of 5 &#x3bc;m to 50 &#x3bc;m. A ratio of an average particle size of the ceramic coarse particle to the ceramic fine particles is 15:1-200:1.

Ceramic sintered body and ceramic filter

A method for manufacturing a honeycomb structure includes molding a ceramic raw material to manufacture at least one honeycomb molded body having a plurality of cell walls extending along a longitudinal direction of the at least one honeycomb molded body to define cells. The honeycomb molded body is fired to manufacture a honeycomb fired body. A honeycomb block is manufactured by using the honeycomb fired body. The honeycomb fired body is cut before manufacturing the honeycomb block or the honeycomb block is cut after manufacturing the honeycomb block.

Method for manufacturing honeycomb structure

A honeycomb structure includes a honeycomb unit. The honeycomb unit includes plural cells, inorganic particles, and at least one of a flake substance, a tetrapod-shaped substance, and a three-dimensional needle-shaped substance. The plural cells extend from a first end face to a second end face of the honeycomb structure along a longitudinal direction of the honeycomb structure. The plural cells are defined by cell walls.

Honeycomb structure

A honeycomb structural body includes a honeycomb unit having a plurality of through holes defined by cell walls and arranged in a longitudinal direction of the honeycomb unit. The honeycomb unit includes an inorganic binder, a first zeolite, and second zeolite. The first zeolite includes at least one of a &#x3b2; type zeolite and a ZSM-5 type zeolite, and primary particles having an average particle diameter of approximately 0.01 &#x3bc;m or more and approximately 0.1 &#x3bc;m or less. The second zeolite includes a phosphate group zeolite and primary particles having an average particle diameter of approximately 0.5 &#x3bc;m or more and approximately 5 &#x3bc;m or less. A ratio between a mass of the first zeolite and a total mass of the first and second zeolites is approximately 0.1 or more and approximately 0.5 or less.

Honeycomb structural body and exhaust gas converting apparatus

A method for manufacturing a honeycomb structure includes molding a ceramic raw material to manufacture at least one honeycomb molded body having a plurality of cell walls to define cells. First cells and third cells are filled with plug material paste at first end portions and at third portions, respectively, to form first plugs. The at least one honeycomb molded body is fired to manufacture at least one honeycomb fired body. The at least one honeycomb fired body is cut along a plane substantially perpendicular to the longitudinal direction to create a second end face side of the at least one honeycomb fired body. Second end portions of second cells are filled with plug material paste. The plug material paste in the second end portions is solidified through heating to form second plugs. A honeycomb block including at least one honeycomb fired body is produced.

A honeycomb structure includes a ceramic block including a plurality of honeycomb fired bodies, a first adhesive layer, and a second adhesive layer. The plurality of honeycomb fired bodies includes center-portion honeycomb fired bodies located at a center portion in a cross-section perpendicular to the longitudinal direction and peripheral honeycomb fired bodies surrounding the center-portion honeycomb fired bodies. The first adhesive layer is interposed between the center-portion honeycomb fired bodies to connect the center-portion honeycomb fired bodies. The second adhesive layer is interposed between each of the center-portion honeycomb fired bodies and each of the peripheral honeycomb fired bodies and between the peripheral honeycomb fired bodies. An adhesive strength &#x3b1; between the center-portion honeycomb fired bodies bonded via the first adhesive layer is higher than an adhesive strength &#x3b2; between honeycomb fired bodies bonded via the second adhesive layer.

Honeycomb structure and method for manufacturing the same

A honeycomb structure includes a honeycomb block which includes at least one honeycomb fired body having a first end face side and a second end face side in a longitudinal direction of the honeycomb fired body. The honeycomb fired body includes a plurality of cell walls extending along the longitudinal direction to define cells. Either one of first and second end portions in the longitudinal direction of each of the cells is sealed. The first end portion provided on the first end face side of the at least one honeycomb fired body is sealed with a first plug which is made from a plug material paste and fired. The second end portion provided on the second end face side of the at least one honeycomb fired body is sealed with a second plug which is made from a plug material paste and unfired.

Honeycomb structure, exhaust gas purifying apparatus and method for manufacturing honeycomb structure

A method for manufacturing a honeycomb structure includes molding a ceramic raw material to manufacture honeycomb molded bodies. The honeycomb molded bodies are fired to manufacture honeycomb fired bodies. End faces of at least two of the honeycomb fired bodies are joined interposing a joining material between the end faces to manufacture honeycomb joined bodies each having a length larger than a length of each honeycomb fired body. Side faces of the honeycomb joined bodies are bonded interposing an adhesive paste between the side faces to manufacture an aggregated body of the honeycomb joined bodies. The adhesive paste is dried and solidified to manufacture a honeycomb block including the aggregated body. The honeycomb block is separated at the joining material into at least two honeycomb blocks.

A honeycomb structured body includes a plurality of honeycomb members bonded together by a bonding material, including a plurality of first honeycomb members, each having a vertical cross-section that is orthogonal to an axis of the honeycomb structured body and rectangular, and a plurality of second honeycomb members each having a vertical cross-section that is orthogonal to the axis and irregular in shape; and a filing layer arranged between an outer coating layer, which defines an outer surface of the honeycomb structured body, and an outer surface of the filter peripheral portion formed by the plurality of second honeycomb members.

Honeycomb structure and manufacturing method for honeycomb structure

The invention provides a method for producing a porous body comprising: a starting material mixing step of mixing ceramic particles serving as an aggregate and a sintering aid which includes at least one element selected from the group consisting of rare earth elements, alkaline earth elements, Al and Si such that the amount of the sintering aid is about 1.0% by weight or less relative to the total amount of the ceramic particles and the sintering aid to form a puddle; and a molding and firing step of molding the puddle into a molded body and firing the molded body.

Method for producing porous body, porous body, and honeycomb structure

A ceramic honeycomb structural body is manufactured by molding silicon carbide raw powders into a honeycomb pillar shape and then firing it to form a sintered body. The silicon carbide raw powders are comprised of about 60 to about 80% by mass of particles of first particle group having one frequency peak in the particle size distribution and a particle size of 1.0 &#x3bc;m to about 100 &#x3bc;m, and about 20 to about 40% by mass of particles of a second particle group having a particle size of about 0.1 &#x3bc;m or more and less than 1.0 &#x3bc;m.

Ceramic honeycomb structural body and method of manufacturing the same

A honeycomb structured body of the present invention is a honeycomb structured body in which a plurality of porous ceramic members are combined with one another through an adhesive layer, each of the porous ceramic members having a plurality of cells which are allowed to penetrate in a longitudinal direction with a wall portion therebetween and either one end of which is sealed, with a catalyst supporting layer being adhered to the wall portion, wherein, supposing that the rate of the pore volume of pores having a pore diameter of 10 &#x3bc;m or less to the entire pore volume of the porous ceramic member is X(%), the porosity is Y(%) and the weight of the catalyst supporting layer is Z(g/l), these X, Yand Zare allowed to satisfy the following expressions (1) and (2):&#x2266;20&#x2212;/10&#x2003;&#x2003;(1), and&#x2267;35+7/40&#x2003;&#x2003;(2)(where about 20&#x2266;Z&#x2266;about 150).

Honeycomb structured body

It is to provide a honeycomb structural body having an excellent durability, which is large in the catching amount of particulates per unit volume and does not cause uneven accumulation of ash and occurrence of cracks or the like even in use for a long period of time, and there is proposed a honeycomb structural body obtained by assembling one or plural porous ceramic members in which two kinds of through-holes consisting of a group of large volume through-holes and a group of small volume through-holes are arranged side by side in the longitudinal direction through partitions and either one ends of these through-holes are plugged, wherein the ceramic member is made of silicon-ceramic composite material consisting of ceramic and silicon.

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Ibi-gun, Japan

Hiroki Sato