Verfahren zur Herstellung von Bauteilen aus hochtemperaturbeständiger faserverstärkter Verbundkeramik aus Kohlenstofffaser-haltigen Bändern (1, 1'), Herstellen einer kraftschlüssigen Verbindung im Bereich der Kontaktzonen (4, 4') durch Erwärmen und gemeinsames Verfestigen unter Druck- und Temperatureinfluss, Carbonisieren des Vorkörpers (10) mindestens einmalige Nachverdichtung des Vorkörpers (10) gefolgt von einer Carbonisierung des so behandelten Vorkörpers (10), dadurch gekennzeichnet, dass die Bänder (1) von den benachbarten Bändern (1') im Bereich (7) außerhalb der Kontaktzonen (4, 4') durch Abstandshalter (3) aus Graphit getrennt werden, und in eine Spannvorrichtung, (5) die im wesentlichen aus Graphit besteht, eingelegt werden, so dass die Bänder (1) und die hieraus gebildeten Vorkörper (10) während der Verarbeitungsschritte fest fixiert sind, und Verwendung von so hergestellten Bauteilen als Werkstückträger, Träger für optische Bauteile sowie in der Luft- und Raumfahrt.

It is to propose a ceramic honeycomb structural body capable of realizing not only collection and removal of particulates included in an exhaust gas discharged from an internal combustion engine but also conversion of harmful gases. This honeycomb structural body comprises a sintered body having a pore structure wherein pores having a pore size ranging from 1.0 to 150 µm are a first pore group and pores having a pore size ranging from 0.006 µm to less than 1.0 µm are a second pore group in a pore size distribution curve, one peak in the pore size distribution is existent in the first pore group region and plural peaks in the pore size distribution are existent in the second pore group region.

An object of the present invention is to provide a honeycomb structured body that makes it possible to support a catalyst supporting carrier or a catalyst so as to prevent the increase in pressure loss depending on the rate of pores having a pore diameter of 10 µm or less to the entire pores or the porosity, and also to sufficiently exert catalyst functions, and the honeycomb structuredbody 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 µm or less to the entire pore volume of the porous ceramic member is X₁ (%), the porosity is Y₁ (%) and the weight of the catalyst supporting layer is Z₁ (g/l), these X₁, Y₁ and Z₁ are allowedto satis fy the following expressions (1) and (2) : $${\mathrm{X}}_{\mathrm{1}}\mathrm{\le }\mathrm{20}\mathrm{-}{\mathrm{Z}}_{\mathrm{1}}\mathrm{/}\mathrm{10}$$ and $${\mathrm{Y}}_{\mathrm{1}}\ge \mathrm{35}+7{\mathrm{Z}}_{\mathrm{1}}\mathrm{/}\mathrm{40}$$ (where 20 ≤ Z₁ ≤ 150).

An object of the present invention is to provide a honeycomb structured body in which the high aperture ratio and the strength can be secured, and the 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 by interposing an adhesive layer, each of the porous ceramic members having a plurality of cells placed in parallel with one another in a longitudinal direction with a cell wall therebetween and having a outer edge wall on the outer edge surface thereof, wherein each of the porous ceramic members has a filling body which is provided so as to fill in at least one corner portion of at least one outermost cell of the porous ceramic members, a cross-sectional shape of the outermost cell at the face orthogonal to the longitudinal direction of the cells is an almost tetragon, and a cross-sectional shape of the filling body at the face orthogonal to the longitudinal direction of the cells is an almost right triangle.

A honeycomb structured body (21) for preventing cells in a filter peripheral portion from being clogged. The honeycomb structured body includes a filter core portion (21A) having a rectangular cross-section and a filter peripheral portion (21B) arranged outside the filter core portion. The honeycomb structured body has a circular cross-section. In the honeycomb structured body, filling layers (35) are arranged in lieu of small honeycomb members that have extremely small vertical cross-sectional areas.

Integrated ceramic/metallic components (50) and methods of making same are described herein. Embodiments of these integrated ceramic/metallic components comprise a metallic non-foam region (52); and a ceramic foam region (58) comprising a gradient porosity therein, wherein the ceramic foam region (58) and the metallic non-foam region (52) are integrally formed together to create the integrated ceramic/metallic component (50). Embodiments of these integrated ceramic/metallic components comprise a metallic region (52); and a single piece ceramic foam construction (58) comprising a plurality of ceramic foam regions (60, 70, 80) therein, each ceramic foam region comprising a predetermined pore size and a predetermined volume percent porosity, wherein the single piece ceramic foam construction (58) is integrally joined to the metallic region (52) to form the integrated ceramic/metallic component (50). These components may be utilized in gas turbine engines.

The present invention provides a honeycomb structure in which a plurality of honeycomb segments each constituted by a cell structure having a plurality of cells divided from each other by partition walls and functioning as a passage for fluid and an outer wall provided at the circumference of the cell structure are bonded to each other at the outer walls by a bonding layer made of a bonding agent and converted into one piece, which honeycomb structure is characterized in that the bonding agent does not contain inorganic particles having diameters (µm) of at least 1.1 times the average surface roughness Ra (µm) of the outer wall, in an amount exceeding 30% by mass relative to the total of the bonding agent. In the honeycomb structure, the honeycomb segments as a constituent are strongly bonded to each other by a bonding agent and converted into one piece.

A honeycomb filter (59) has a plurality of cells defined by a cell wall (13) for purifying fluid including particulates with the cell wall.

A specific surface area of grains forming the cell wall is 0.1m²/g or more. Also disclosed is a filter assembly comprising a plurality of filters, and an exhaust gas purification apparatus including the filter or filter assembly.

An elongated honeycomb filter (F100) is formed from a sintered porous ceramic body, and has a ratio L/S between a filter length L in a flow direction of a processed fluid and a filter cross-section S in a direction perpendicular to the flow direction of 0.06mm/mm² to 0.75mm/mm². Also disclosed is a filter assembly comprising a plurality of filters, and an exhaust gas purification apparatus including the filter assembly.

Bei Stahlbetonbauteilen aus hochfesten Betonen treten bei Brandbeanspruchung explosionsartige Abplatzungen auf. Diese lassen sich dadurch verhindern, daß der Beton derartiger Bauteile mit einem Kapillarsystem versehen wird, dessen im wesentlichen lineare Kapillaren wenigstens 3 µm Durchmesser und wenigstens 5 mm Länge haben.

Dieses Kapillarporensystem kann ohne Beeinträchtigung der sonstigen gewünschten Eigenschaften des Betons oder Mörtels bei oder nach dem Aushärten des Betons gebildet werden oder auch erst unter den Bedingungen der Brandbeanspruchung entstehen. Das geschieht mit Fasern, die die Kapillaren durch Auflösen, Erweichen, Schrumpfen, Zersetzen oder Schmelzen ausbilden und hinsichtlich Durchmesser und Länge sowie der eingebrachten Menge den gewünschten Kapillaren entsprechen.

Aus solchem Faserbeton hergestellte Stützen, gegebenenfalls unter Zusatz feindisperser Kieselsäure lassen sich der Feuerwiderstandsklasse F 180-A zuordnen.