Ngk Insulators, Inc.

Takafumi Kimata

Yoshio Kikuchi

Kisuke Yamamoto

Yukio Miyairi

Kenji Morimoto

Masaki Ishikawa

Kenichi Hidaka

Kazuya Hosoda

Masaaki Masuda

Kenji Suzuki

Yoshimasa Kobayashi

Yunie Izumi

Yoshinori Isoda

Akimasa Ichikawa

Naoto Kinoshita

Kyohei Kato

Tetsuya Hattori

Soichiro Aoyagi

A pillar shaped honeycomb structure includes: an outer peripheral wall; and porous partition walls disposed on an inner side of the outer peripheral wall, the partition walls defining a plurality of cells, each of the cells extending from one end face to other end face to form a flow path, wherein the cells include a plurality of wire pieces made of a magnetic substance, the wire pieces being provided apart from each other via spaces or buffer materials in an extending direction of the cells.

Honeycomb structure and exhaust gas purifying device

A pillar shaped honeycomb structure, including: an outer peripheral wall; and a porous partition wall disposed inside the outer peripheral wall, the a porous partition wall defining a plurality of cells, each of the cells extending from one end face to other end face to form a flow path, wherein a surface of the porous partition wall in the cells comprise a collecting layer having an average pore diameter lower than that of the porous partition wall; and wherein magnetic particles having a Curie point of 700° C. or higher are provided either or both between the surfaces of the porous partition wall and the collecting layer, and on the collecting layer.

A pillar shaped honeycomb structure, including: an outer peripheral wall; and a porous partition wall disposed inside the outer peripheral wall, the partition wall defining a plurality of cells, each of the cells extending from one end face to other end face to form a flow path, wherein the plurality of cells include two or more types of magnetic substances in which at least two of a maximum magnetic permeability, a Curie point, and an intrinsic resistance value are different.

A SiC powder containing 70% by mass or more of a &#x3b2;-SiC, wherein in a volume-based cumulative particle size distribution measured by a laser diffraction method, a D50 is 8 to 35 &#x3bc;m and a D10 is 5 &#x3bc;m or more.

SiC powder and method for manufacturing same, electrically heated honeycomb structure and method for manufacturing same

A ceramic formed body extrusion method for forming a ceramic formed body having a wall-shaped or plate-shaped formed portion by using an extrusion die provided with a slit for extrusion of a ceramic formed body from a raw material for forming, the slit including a slit former stage unit located on an upstream side in an extrusion direction in the extrusion and a slit latter stage unit located on a downstream side in the extrusion direction, the slit latter stage unit having a width of three to 27 times a width of the slit former stage unit, and by extruding a raw material containing a first particle having an aspect ratio of two or more and less than 300 such that the raw material passes though the slit former stage unit of the extrusion die and then passes through the slit latter stage unit.

Ceramic formed body extrusion method, ceramic formed body, and ceramic porous body

A method for manufacturing a plugged honeycomb structure, includes: a forming raw material preparation step of mixing and kneading a partition wall base material raw material at least including cordierite powder and binder with water to obtain a partition wall base material forming raw material; a forming/drying step of forming the partition wall base material forming raw material to obtain a honeycomb formed body, and drying the honeycomb formed body to obtain a honeycomb dried body; a slurry application step of applying trapping layer forming slurry including a cordierite forming raw material or alumina to a surface of a not-fired partition wall base material of the obtained honeycomb dried body; a firing step of firing the slurry-applied honeycomb dried body; and a plugging step of disposing a plugging portion at open ends of predetermined cells of the slurry-applied honeycomb dried body or of the honeycomb fired body.

Method for manufacturing plugged honeycomb structure, and plugged honeycomb structure

There is disclosed a plugged honeycomb structure. A plugged honeycomb structure includes a pillar-shaped honeycomb structure body having porous partition walls defining a plurality of cells which become through channels for a fluid and extend from a first end face to a second end face, and plugging portions disposed in open ends of predetermined cells in the first end face and open ends of residual cells in the second end face, and the partition walls are constituted of a porous body including &#x3b1;-AlOas a main phase and further including aluminum titanate and glass.

Plugged honeycomb structure

A honeycomb structure including a pillar-shaped honeycomb structure body having partition walls defining a plurality of cells which become through channels for a fluid and extend from a first end face to a second end face, the partition walls include a porous body having refractory aggregates and a bonding material which bonds the refractory aggregates to each other, the bonding material includes metal Si and an oxide material, porosity of the porous body constituting the partition walls is 25% or more and 70% or less, a ratio of a mass of the bonding material to a mass of the whole porous body is 30 mass % or more and 50 mass % or less, and a ratio of a mass of the oxide material to the mass of the bonding material is 30 mass % or more and 80 mass % or less.

Honeycomb structure

A carbon membrane formed by carbonizing a phenol resin having at least one kind of atomic groups among a methylene bond, a dimethylene ether bond, and a methylol group, wherein the total mole content of the atomic groups is 100 to 180% with respect to the phenolic nuclei. A pervaporation separation method using the carbon membrane is also disclosed.

Carbon membrane and method for pervaporation separation

The present invention provides a TiSiCbased material that exhibits excellent arc resistance, an electrode, a spark plug, and methods of manufacturing the same. A TiSiCbased material according to the present invention includes TiSiCas a main phase, the TiSiCbased material having a TiC content of 0.5 mass % or less and an open porosity of 0.5% or less. It may be preferable that 0 to 30 mol % of Si in the main phase TiSiCbe substituted with Al. A spark plug according to the present invention includes an electrode formed using the TiSiCbased material.

Growing community of inventors

Nagoya, Japan

Takafumi Kimata