Abstract: A process for forming layers on a substrate including irradiating at least part of an aluminum nitride surface with a high power ultraviolet emitter resulting in the elimination of the nitride component to form an aluminum layer. The aluminum layer is then reinforced by a metal.

Abstract: An apparatus for coating substrates by photolytic dissociation or decomposition of a coating material includes a reactor vessel. A UV radiation source and the substrate to be coated are both disposed in the reactor vessel.

Abstract: A sintering device for the production of cupular solid electrolytes, which are used to separate anode and cathode compartments in sodium-sulphur cells, is in the form of a jacket tube and is produced from two or more metal oxides or metal hydroxides. The device and method avoid the disadvantages of the prior art sintering devices that are costly to manufacture and in most cases destroy the uniform distribution of the sodium within the soilid electrolyte material.

Abstract: In thermal insulation devices which include a molded part formed of thermal insulation material and a metal housing enclosing the molded part, an evacuation of the thermal insulation device with the aid of a vacuum pump requires a relatively long pumping time. The invention proposes providing groove-like recesses in the molded part for reducing the suction resistance. The groove-like recesses form suction channels together with the wall of the metal housing. Such vacuum thermal insulation devices are used, for example, for thermally insulating high-temperature batteries.

Abstract: A superconducting fiber bundle includes carrier material formed by fibers of carbon, silicon carbide, steel, boron or glass. The fibers have a superconducting coating formed of a superconducting, non-metallic, inorganic material. The coating of the fibers is carried out from the liquid phase or the gas phase.

Abstract: In data processing devices for built-in control panels having a vertical front surface, the disposition of the operating panel is particularly ergonomically unsatisfactory when the operating panel is located substantially below the height of the head of the operator. The operating module therefore can be inserted into a front compartment disposed at the front surface of the device. A correspondingly constructed suspension configuration is provided in the front compartment for suspending the operating module in two different positions with respect to the front surface of the device. The invention can be used for facilitating operation of all data processing devices with a vertical front surface.

Abstract: In high-temperature batteries which contain a series circuit of galvanic cells with a solid electrolyte, the solid electrolyte can be damaged without the damage being noticed when the battery is short circuited in the cold condition and a voltage reversal occurs at individual cells. According to the invention, a protection device is formed of elements that are connected in parallel with the cells. The elements have a high resistance at the operating temperature of the battery and a low resistance in the cold condition. The elements form a voltage divider in the case of a short circuit caused at external terminals of a cold battery. The voltage divider ensures the desired voltage division.

Abstract: A catalyst for the elimination of toxic substances in exhaust gases from combustion systems and internal combustion engines, having at least one layer of catalyst material, includes a catalyst material formed by at least one mixed oxide system, which has unsaturated ions on its surface that effect charge transfer processes. A method for manufacturing such a catalyst includes grinding dry carbonates or oxides of lanthanum, manganese, iron, copper and strontium in a defined ratio by weight for at least one hour, and sintering the powder mixture thus formed at 1300.degree. C. for forming the perovskite structure or the perovskite and spinel structure.

Abstract: A passive infrared motion indicator installed at a distance above the ground includes a housing having at least one housing recess formed therein. A Fresnel lens system is disposed in the at least one housing recess. At least one infrared sensor disposed inside the housing has Fresnel lenses onto which frontally arriving first infrared rays with a horizontal main ray are directed from a first detection area and deflected onto the infrared sensor and Fresnel lenses onto which laterally arriving second infrared rays with a horizontal main ray are directed from a second detection area and reflected onto the infrared sensor. At least one deviation mirror surface is tilted above the horizontal main rays of the first and second infrared rays for intermediately deflecting third infrared rays arriving from a third detection area disposed below the passive infrared motion indicator between the ground and the first and second detection areas, onto the infrared sensor.

Abstract: A fuel cell assembly has at least one fuel cell with an anode, a cathode and an ion-conducting solid electrolyte. A plurality of fuel cells are combined to form a fuel cell block which meets technical requirements and can be produced cost-effectively.

Abstract: A catalyst is used for removing toxic substances from the exhaust gases of combustion installations and internal combustion engines, by reduction with carbon monoxide, hydrogen, hydrocarbons or ammonia. The catalyst is produced using a single-phase or multi-phase mixed oxide system with a pure perovskite structure or a perovskite and spinel structure. To produce the catalyst, carbonates or oxides of lanthanum, strontium, manganese, iron and copper are mixed, crushed, dried and ground to a fine powder with a particle size between 0.1 and 5 microns. This powder is then processed to form a catalytically active layer.

Abstract: In a method and device, extinction blocking signals for gate-turn-off power semiconductors, particularly GTO thyristors, are formed in static converters in order to suppress unacceptable extinction attempts and to protect the power semiconductors against destruction. An extinction blocking signal is emitted when the sum of the actual load current of one phase of the converter and the product of the derivation with respect to time of the load current and the maximum storage time of one power semiconductor is greater than the maximum periodically interruptible anode current of one power semiconductor. Furthermore, an extinction blocking signal is emitted when the derivation of a branch current of the converter with respect to time exceeds a threshold value proportional to the voltage supplied to the converter and a short-circuit of the converter is therefore present.

Abstract: A superconductor and a method of producing the same include a supporting substrate and a superconducting oxide ceramic material applied to the supporting substrate. At least one thermally and chemically stable intermediate layer is applied directly between the superconducting ceramic material and the substrate.

Abstract: A method and device for generating steam and electric power for the start-up and/or auxiliary operation of a steam power station include at least one start-up gas turbine, a generator driven by the start-up gas turbine for generating power, and a start-up or auxiliary steam generator being fed by condensate from a main circuit of the steam power station. The exhaust or exit gas from the start-up gas turbine is fed to the start-up or auxiliary steam generator and heating of the start-up or auxiliary steam generator is effected by waste heat in the exhaust or exit gas stream from the start-up gas turbine.

Abstract: A spindle drive for generating a rotational motion, in particular a drive for a high-voltage disconnecting switch, includes a drive shaft, at least one sliding block disk being mounted on the drive shaft and having recesses formed therein, two retaining bolts, a carriage in which the retaining bolts are fastened, a single slide nut for moving the carriage, and a drive spindle for moving the retaining bolts into engagement with the recesses. The drive spindle moves the retaining bolts through the slide nut and the carriage.

Abstract: A method for preparing a ceramic suspension using alpha-Al.sub.2 O.sub.3 powder containing agglomerated powder particles includes dissolving ionic or polymeric reagents as additional dispersing agents in water or an organic solvent as a dispersion medium. Alpha-Al.sub.2 O.sub.3 powder is added thereto while being stirred. Ceramic molded articles may be produced from the suspension.

Abstract: A test bench for vehicles includes a testing zone for testing vehicles, and a preparation zone separate from the testing zone. The preparation zone includes a lifting platform, an air cushion transport system, and an air drive system for driving the air cushion transport system into the testing zone with the vehicle prepared for testing.

Abstract: In methods and devices for removing a blower from a gas-cooled nuclear reactor, removal bells have previously been used which require considerable free space above the blower in the case of vertically extending blower configurations. In order to achieve a lower structural height according to the invention, the periphery of the connection location between the blower housing and the steam generator housing is overlapped by a flange ring attached to the steam generator housing. The blower housing performs a vertical moving maneuver within the range of the height of the flange ring, during which a sealing cover and a transport cover are inserted through a lateral opening in the flange ring. The sealing cover is deposited on the edge of the opening of the steam generator housing and the transport cover is coupled to the bottom region of the blower housing. The blower housing is then removed together with the blower.

Abstract: An alloy for coating austenitic super alloy materials for high-temperature service is provided. It comprises a nickel, chromium, aluminum alloy with at least one metal of Group IV and/or one transition metal of Group V of the periodic table as additives and yttrium, and/or hafnium included to improve adhesion of the alloy coating and of the aluminum oxide film formed thereon during heat treatment and intended high-temperature service.

Abstract: A power semiconductor module and method for producing the module includes a plastic housing having a lower surface. An electrically insulating substrate having an upper surface is inserted in the lower surface of the plastic housing for supporting electrical components. A metallization is disposed at least on the upper surface of the substrate. The metallization on the upper surface of the substrate is patterned to form conductor tracks. Components are soldered onto the patterned metallization. Locating compartments disposed in the plastic housing form a soldering jig for the components during production of the module.