Ngk Insulators, Inc.

Takehide Shimoda

Takashi Aoki

Yukio Miyairi

Masaaki Masuda

Yunie Izumi

Atsuo Kondo

Takao Saito

Satoshi Sakashita

Hiroyuki Nagaoka

Kyohei Kato

Teruyoshi Mori

Hirofumi Sakamoto

Norihiro Wakita

A pillar shaped honeycomb structure includes: a porous partition wall that defines a plurality of cells, the cells forming flow paths for a fluid, the cells extending from an inflow end face to an outflow end face; and an outer peripheral wall located at the outermost circumference. At least a part of surfaces of the partition walls has a surface layer, and the surface layer includes magnetic particles and has permeability.

Pillar shaped honeycomb structure, exhaust gas purifying device, exhaust system, and method for producing honeycomb structure

A method for producing a porous body, comprising a raw-material mixing step of mixing talc having an average particle size of 1 &#x3bc;m or more and 18 &#x3bc;m or less, alumina, an auxiliary raw material containing a material that undergoes a eutectic reaction with talc and being prepared in an amount so as to satisfy a weight ratio of 0.5% or more and 1.5% or less by weight relative to the talc, and a pore-forming agent, to provide green body, and a molding and firing step of molding the green body to provide a compact and firing this compact at a firing temperature of 1350&#xb0; C. to 1440&#xb0; C.

Method for producing porous body

There is provided a mold for extrusion forming of ceramic articles which is excellent in wear resistance and can remarkably decrease forming defects in the vicinity of outer peripheries thereof. The mold for the extrusion forming of the ceramic articles includes a diehaving a plurality of back holesand slitsa back pressing plateand a back spacerto adjust the amount of the kneaded clay to be supplied; and a pressing plateand a spacerto regulate the shape and size of the formed ceramic article. At least a portion of the supply endof the diewhich overlaps with the back pressing plateis flattened, and a surface roughness (Ra) thereof is in a range of 0.05 &#x3bc;m to 10 &#x3bc;m.

Mold for extrusion forming of ceramic articles

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Nagoya, Japan

Takehide Shimoda