Abstract: A method produces a molded part from carbon containing carbon fibers in an amount of less than 20% by weight. The method includes comminuting waste parts or scrap parts formed from a carbon fiber-reinforced synthetic material, a carbon fiber reinforced carbon or a carbon fiber reinforced concrete. A mixture is produced from the comminuted product, a binder such as pitch, a carbon material such as coke and optionally one or more additives, wherein the mixture contains less than 20% by weight of fibers. The mixture is molded into a molded part and the molded part is carbonized. Optionally, the molded carbonized part is impregnated with an impregnating agent. Finally and optionally, the molded carbonized part or the molded part impregnated part is graphitized.

Abstract: A [lacuna] principally for loading and unloading the utility surface (3?) of the drying chamber (2) of a freeze drying system, which utility surface is located at a defined height position, the unloading position, is characterized by a carriage (8), which is disposed slightly above said utility surface and extends, during loading or unloading, transversely with respect to a movement direction (8?) and in parallel with the utility surface and which forms a movable guiding edge for the drying vessels (5), and by guides (7), which are disposed on both sides of the utility surface (3), extend in parallel with the said movement direction and form fixed guiding edges for the drying vessels (5). The carriage (8) is driven by two linear motors, the respective secondary parts (18) of which are fixedly connected to the ends of the carriage (8) on both sides and are supported on the guides (7) which at the same time accommodate the primary parts.

Abstract: A material composition is formed with a carrier component and an additive component. The additive component has one or more ceramic additives. The carrier component and the additive component are present in a ratio by volume in the range from approximately 1:9 to approximately 7:3, preferably in the range from approximately 1:4 to approximately 2:1. More particularly, they are present in a ratio of approximately 1:1. The material composition may be formed as a foil or as a liquid, viscous, paste or gel material. The material composition may be used, inter alia, as oxidation protection and as a sealing element.

Abstract: A device principally used for loading and unloading the standing surface (3?) of the drying chamber (2) of a freeze drying installation, which standing surface is located at a defined height position, the unloading position, is characterised by a carriage (8), which is disposed slightly thereabove, extends transversely to a movement direction (8?) during a loading or unloading process and in parallel with the standing surface and forms a movable guiding edge for the drying vessels (5), and by guides (7) which are disposed on both sides of the standing surface (3?), extend in parallel with the said movement direction and form fixed guiding edges for the drying vessels (5). The carriage (8) is driven by two linear motors, the respective primary parts (9) of which are fixedly connected to both side ends of the carriage (8) and are supported on the guides (7) which at the same time receive the secondary parts.

Abstract: An expanded graphite is derived from a graphitic or partially graphitic starting material selected from the group consisting of natural graphite, compressed expanded graphite, partially oxidized graphite and/or graphite fibers having a BET surface area of >30 m2/g. The expanded graphite is obtained by reaction of the starting material with substances capable of intercalation or mixtures of substances capable of intercalation to give a compound designated as an intercalation compound and subsequent expansion in plasma.

Abstract: Temperature-control bodies for photovoltaic modules have heat transfer tubes embedded in a layer of compressed expanded graphite and connected to the surface of a photoelectric cell layer that faces away from the solar radiation. A layered composite semi-finished product has a layer of compressed expanded graphite with a density of between 0.02 g/cm3 and 0.5 g/cm3.

Abstract: Cathodes for aluminum electrolysis cells are formed of cathode blocks and current collector bars attached to those blocks. The cathode slots receiving the collector bar are lined with expanded graphite lining thus providing longer useful lifetime of such cathodes and increased cell productivity. The expanded graphite provides a good electrical and thermal conductivity especially with its plane layer.

Abstract: A method for producing a latent heat storage material from a graphitic starting material selected from the group consisting of natural graphite, expanded graphite, and/or graphite fibers, and from a phase-changing material selected from the group consisting of sugar alcohols, water, organic acids and the mixtures thereof, aqueous salt solutions, salt hydrates, mixtures of salt hydrates, salt hydrates with paraffins, inorganic and organic salts and eutectic salt mixtures, clathrates and alkali metal hydroxides, as well as mixtures of these materials. The graphitic starting material is treated with a plasma before being impregnated with the phase-changing material. A latent heat storage material is produced according to the method.

Abstract: An anode assembly for aluminum electrolysis cells includes carbon anodes with stubholes and an anode hanger having stubs, in which the anodes are fixed to the anode hanger by cast iron and the stubholes are fully or partially lined with an expanded graphite lining. The anode assembly provides a reduced voltage drop across an interface between the cast iron and the carbon anode and thus increases cell productivity significantly. Mechanical stresses in the stubhole area are reduced. A collar formed from the lining prevents spilling of cast iron over the anode surface and a protective shot plug or a protective collar optionally prevent direct contact of a hot electrolyte bath with the stub and the cast iron. A method of manufacturing anode assemblies and an aluminum electrolysis cell, are also provided.

Abstract: A method for applying a thin coating to a flat side (front side) and edge surfaces of a two-dimensional formation of graphite foil, includes applying the coating material to the flat side (front side) to be coated by electrostatic powder spraying followed by a sintering cycle or melting cycle. During the spraying, the two-dimensional formation is electrically contacted on a limited area virtually in the middle of its rear side, facing away from the spraying direction, on a limited area at a distance of at least 5 mm from the edges. A method for heat dissipation in electronic equipment, is also provided.

Abstract: A sealing material is formed as a planar laminate compound made of at least two layers of a graphite film with a maximum density of 1.6 g/cm3 alternating with at least one metal inlay. The metal inlay has a three-dimensional structure and has open depressions on one side which are covered by graphite overlays with a thickness in the range of up to a maximum of 5.0 mm. The depressions are enclosed by elevations intersecting in straight lines, and the ridge lines on both main sides lie approximately on defined planes a, b. Alternatively, the metal inlay has a hole structure both sides of which are covered by graphite overlays with a thickness in the range of up to a maximum of 5.0 mm. The holes are enclosed by webs and on both main sides lie approximately on the planes a, b. The hole area forms 40% to 90% of the total surface area of the metallic inlay.

Abstract: An expanded graphite is derived from a graphitic or partially graphitic starting material selected from the group consisting of natural graphite, compressed expanded graphite, partially oxidized graphite and/or graphite fibers having a BET surface area of >30 m2/g. The expanded graphite is obtained by reaction of the starting material with substances capable of intercalation or mixtures of substances capable of intercalation to give a compound designated as an intercalation compound and subsequent expansion in plasma.

Abstract: Cathodes for aluminum electrolysis cells are formed of cathode blocks and current collector bars attached to those blocks. The cathode slots receiving the collector bar are lined with expanded graphite lining thus providing longer useful lifetime of such cathodes and increased cell productivity. The expanded graphite provides a good electrical and thermal conductivity especially with its plane layer.

Abstract: Graphite films are provided with a metal coating of at most 100 nm thick and are produced, for example by a continuous vapor deposition process on graphite film. In spite of the small thickness of the metal layer, the graphite films can be connected to one another or to other components of metal or metal-coated materials by soldering. Furthermore, the thin metal coating protects the surface of the graphite film against particles breaking out or peeling or flaking off.

Abstract: The invention relates to the detection of oxidation of carbon-containing fibers or fiber bundles embedded in a nonconductive or semiconducting ceramic matrix in composites wherein use is made of the eddy current method.

Abstract: High-temperature-resistant composites are formed of at least two layers of high-temperature-resistant carbon-based materials or graphite-based materials. The layers are joined to one another by a carbonized binder which contains planar anisotropic graphite particles. The planar anistropic graphite particles have a high anisotropy in respect of their crystal structure and their thermal conductivity are added to the carbonizable binder.

Abstract: A latent heat storage device including a vessel, a phase change material disposed within the vessel, at least one heat exchange interface in contact with the phase change material, at least one sheet of graphite foil which extends within the bulk of the phase change material.

Abstract: A latent heat storage material is in the form of a composite material formed of a phase-change material to store latent heat and graphite flakes incorporated therein to improve thermal conductivity. The graphite flakes are distinguished by a high aspect ratio and a high anisotropy of thermal conductivity. The volume content of graphite flakes in the latent heat storage material is between 10 and 40%. The composite material can be obtained by mixing the components or infiltrating a bed containing graphite flakes with a liquid phase-change material. The graphite flakes are preferably aligned during mixing with the phase-change material by shaking or tamping, etc., so that the thermal conductivity in the direction that is advantageous for the individual application is maximized. A latent heat storage unit containing the material and processes for producing the material and the unit and processes for using the material, are also provided.

Abstract: A friction disc, in particular a brake or clutch disc, includes carbon fiber-reinforced ceramic composite material with at least one top surface formed as a friction surface. At least part of the friction surface is formed of a different material, in particular of a carbon-containing material. The different material exhibits lower wear and oxidation resistance than that of the rest of the friction surface and a supporting zone of the friction disc. A visual, audible or mechanical signal is produced under operating conditions due to comparatively greater wear. The signal provides a warning that the service life of the friction disc is being exceeded. A process for producing the friction disc is also provided.

Abstract: Composite which contains reinforcing fibers comprising carbon and whose matrix comprises silicon carbide, silicon and copper, with the mass fraction of copper in the composite being up to 55%, processes for producing it, in particular by liquid infiltration of C/C intermediate bodies with melts comprising Si and/or Cu and Si, and also its use as friction lining in a friction pairing with ceramic brake discs or clutch discs comprising C/SiC.