Ngk Insulators, Inc.

Toshio Oda

Hiromichi Kobayashi

Tsuneaki Ohashi

Hitoshi Yoshida

Shinji Kawasaki

Hiroyuki Tsuji

Keiichiro Watanabe

Hideki Shimizu

Yoshimasa Kondo

Hirotake Yamada

Takeshi Tokunaga

Hitoshi Sakai

Shinya Yoshida

Manabu Yoshida

Shuichiro Oki

Hiroshi Furukubo

Takayuki Ogata

Takeyoshi Togashi

Hitoshi Higuchi

A manufacturing apparatus of a plugged honeycomb structure includes a table portion having a through hole into which the end of a honeycomb structure is inserted, positioning means for positioning and holding the honeycomb structure in the through hole of the table portion in such a manner that its end face appears on the side of a first face of the table portion, and a film holding portion fixing the remaining portion of a film on the side of a second face of the table portion. After or before fixing the film, holes corresponding to openings of cells of the honeycomb structure are formed in the film, and a plugging material is filled into the holes, to manufacture the plugged honeycomb structure using the apparatus.

Manufacturing apparatus of plugged honeycomb structure and manufacturing method of the same

The present invention provides a ceramic structure for improving the resistance against a corrosive substance and to diffuse and supply a fluid over a larger area of the structure. A ceramic laminated article has a ceramic sintered body, and a ceramic film provided on the sintered body by means of chemical vapor deposition. A hollow surrounded by the sintered body and film, and holes in communication with the hollow and the outside are formed in the article. A filling material is filled in the recess of the sintered body and the holes are formed. The thus obtained assembly is heat treated to dissipate and remove the filling material through the communicating holes, so that the recess is left as the hollow.

Ceramic laminated article, a method of producing the same and a ceramic laminate

A ceramic sintered body has a dense portion and a porous portion. The dense portion is formed from sintered ceramic fine particles, and the porous portion is formed from sintered ceramic coarse particles. The fine particles and coarse particles are simultaneously subjected to pressure sintering to form the dense portion and porous portion.

Ceramic sintered bodies and a method of producing the same

A composite material has a quartz glass phase and a complex compound phase compounded with the quartz glass phase, which is made of one or more compounds selected from a group of silicon carbide, silicon nitride, silicon, titanium nitride and titanium carbide, as a main ingredient. The composite material can be used instead of quartz glass, and can prevent the generations of microcrack, tipping and particles after the mechanical working.

Composite material and method of producing the same

An oxide superconductor lamination member has a base, precious metal plates and an oxide superconductor layer. The precious metal plates and the oxide superconductor layer are successively laminated on the base, and the precious metal plates overlap each other at their ends. Another oxide superconductor lamination member has precious metal bases, and an oxide superconductor layer lamination on the precious metal bases. The precious metal bases overlap each other at their ends. End portions of the precious metal plates (bases) are connected by an adhesive so as to form a lap joint. The lap joint of the precious metal plates (bases) are covered with a precious metal foil.

Oxide superconductor lamination

The present process for producing a Bi-based superconducting oxide includes the steps of molding a material powder and subjecting the molded article to partial melting and then to crystallization in the presence of oxygen. In that case, the molded article is annealed, after the partial melting, to the crystallization temperature and subjected to crystallization at that temperature. Also, the article after the crystallization is cooled and the cooled article is heat-treated in an inert gas atmosphere. According to the above process, there can be obtained a Bi-based superconducting oxide having excellent superconducting properties.

Process for producing bismuth-based superconducting oxide

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Nishikasugai-gun, Japan

Toshio Oda