Abstract: A tubular composite member with two ends for connecting ceramic components made of a composite of an inorganic matrix reinforced with inorganic fibers is formed with an at least partially threaded internal surface and an external surface. A ceramic member has at least one surface formed with one or more annular grooves with an inner shell surface, an outer shell surface, and a root. The inner shell surface is at least partially threaded. A resulting ceramic member assembly includes at least two ceramic members connected by at least one tubular composite member. The ends of the tubular composite member are screwed into the corresponding annular groove of two adjacent ceramic members. The such fastened/joined ceramic members can be operated at high temperatures especially under thermal cycling and/or thermal shock conditions as well as dynamic mechanical load in different directions. Methods to manufacture tubular composite members according to this invention are described.

Abstract: A highly pure, replaceable wear insert and a process for manufacturing the same use a group of materials which is suitable for meeting the requirements of high temperature semiconductor technology processes and is chosen at the same time for producing thin layers or components therefrom. The materials are compacted and purified at high temperatures in compression molds and the products so produced are put to their intended use. The substantially thin-walled and crucible-shaped, always highly pure components, which are predominantly made of expanded graphite, are employed as a wear insert for protecting graphitic support crucibles from reactive attack by quartz glass crucibles in semiconductor technology processes at temperatures above 500° C.

Abstract: A mixture for heat storage devices has a phase change material and particulate expanded graphite. The material mixtures are produced by mixing phase change material and expanded graphite as powders or in molten form, and shaping the mixtures into shaped bodies.

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 heating device is formed from an electrically conducting, flexible resistance material of carbon fibers arranged between at least two electrodes provided for electrical contacting. The carbon fibers are stretch-broken carbon fiber yarns with a titer of 30 tex to 800 tex and a resistivity of 100 to 600 ?/m.

Abstract: A composite suitable as a charge-storing material for electrochemical capacitors contains carbon nanotubes and a carbonaceous materiel. The carbonaceous material is the carbonization residue of a biopolymer or seaweed rich in heteroatoms. Wherein the carbonization residue of the biopolymer or seaweed is electrically conductive and has a heteroatom content as detected by XPS of at least 6%.

Abstract: In a method of manufacturing a porous coke suitable as a charge-storing material in electrochemical capacitors, one manufactures or provides a non-calcined isotropic coke with spherical or onion-shaped morphology and low graphitizability as a starting material. The starting material is comingled with a caustic alkali to obtain a homogenous mixture. The homogenous mixture is heat treated at a temperature in a range between 650 and 950° C. to obtain the porous coke. The porous coke is washed and neutralized.

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.