Abstract: The present invention relates to a process for the laminar bonding of materials using a carrier material and at least one electroconductive and possibly compressed powder coat, or an electroconductive powder which is compressed to form a flat moulded article, whereby the carrier material and the powder coat, or the powder-based moulded article are subjected briefly to a magnetic alternating field in the frequency range of ca. 10 kHz to 120 MHz in order to generate in the powder coat or the powder-based moulded article an induction current of such energy density that the points of contact of the powder particles among themselves and if a carrier material is used, also their points of contact with the carrier material are fused together at a temperature above the sintering temperature.

Abstract: In an electrolyzer having bipolar cells, which are arranged in a row and consist each of two metallic partitions, spring-elastic electrodes bearing on the partitions, and a diaphragm which is disposed between the electrodes and is spaced from the electrodes by spacers, contact between the spring-elastic electrodes and the diaphragm is prevented by disposing the spacers of each cell directly opposite to each other and aligned with the spacers of the other cells.

Abstract: In an apparatus of manufacturing diaphragms, a layer of a difficulty flowable metal powder is applied to a support, a wire net is rolled onto the powder layer and the latter is compacted at the same time and the metal powder is fired at 800.degree. to 1500.degree. C. in an oxidizing atmosphere. In order to impart to the diaphragms a constant thickness, strength and density, the metal powder is uniformly distributed and applied as regards its bulk volume to the support and the powder layer is moved under a distributing roller rotating opposite to the direction in which the powder is fed.

Abstract: In an electrolyzer comprising individual cells which are geometrically arranged one behind the other and consist each of two metallic partitions disposed between the cell and the adjacent cells, a diaphragm disposed between the partitions, and apertured electrodes which are mounted on both sides of and spaced from the diaphragm, a protection against short circuits and corrosion is afforded in that spacers consisting of a non-metallic high-melting hard material and firmly joined to the electrodes have been inserted into the space that is defined by the electrode and the diaphragm.

Abstract: In a process of producing composite materials consisting of sheet metal plates, metal strips and foils and provided with a skeleton surface structure, a layer of a metal powder which is difficultly flowable and consists of irregularly shaped particles is applied to a continuously moved metallic carrier layer and is bonded to said carrier layer by cold roll cladding and is sintered in a reducing atmosphere at temperatures of 600.degree. to 1000.degree. C. In order to produce composite materials in which the skeleton structure constitutes a layer that is of uniform thickness throughout the surface and is firmly bonded to the carrier layer, the metal powder is uniformly distributed and applied as regards its bulk volume using a distributing roller, which rotates opposite to the main direction of movement of the carrier layer, whereby a uniform thickness is obtained.

Abstract: In a process of manufacturing diaphragms, a layer of a difficulty flowable metal powder is applied to a support, a wire net is rolled onto the powder layer and the latter is compacted at the same time and the metal powder is fired at 800.degree. to 1500.degree. C. in an oxidizing atmosphere. In order to impart to the diaphragms a constant thickness, strength and density, the metal powder is uniformly distributed and applied as regards its bulk volume to the support and the powder layer is moved under a distributing roller rotating opposite to the direction in which the powder is fed.

Abstract: A process for the manufacture of thin activated electrodes including a base metal, which can be iron, cobalt or nickel, with a good adhering active surface layer. Both the base metal and the surface layer are galvanically sequentially deposited as separate layers on a removable electrically-conductive carrier. The surface layer is deposited as an activatable alloy including the base metal and a leachable metal, particularly zinc. The galvanizing deposited layers are subsequently separated as a unit from the carrier. The alloy is activated by leaching the leachable metal therefrom before, during or after separation of the carrier. Two activatable layers of alloy can be deposited on the carrier with a layer of the base metal deposited between the alloy layers.

Abstract: This invention relates to a filter press type electrolyzer for water comprising pressure-resistant decomposing cells, each of which contains an electrolyte chamber, which is divided by a diaphragm into two electrode compartments. The decomposing cells are enclosed on the outside by cell frames, which are electrically insulated from each other by an interposed sealing ring. On the sides, each cell is separated from the adjacent cells by metallic cell-separating partitions. At least three ducts extend through the cells and respectively serve to supply electrolyte and to discharge hydrogen and oxygen. Each duct is composed of sections. The sections of the ducts consist of sleeves, which are resistant to the operating conditions and insulated from each other and extend through openings in the cell-separating partitions. These openings are lined with metal rings.

Abstract: In the manufacture of sheet metal elements or strip having a catalytic surface structure, a mixture of skeleton material powder, and of Raney alloy powder is rolled onto the starting sheet metal element or strip substrate, sintered in a reducing atmosphere, whereafter the soluble component of the Raney alloy is dissolved out.To ensure an adequate adherence of the catalytic surface structure, the operation in which the above-mentioned mixture is rolled onto the substrate is accompanied by a simultaneous cold-working of the substrate with a deformation of 20 to 60% within each cold-forming step.The coated sheet metal element or strip substrates or any spherical bodies made therefrom serve as electrodes in electrolytic processes.