Abstract:
A method for the electrochemical coating of a workpiece surface (2), micro- or nanoscale particles being introduced into the coating is provided. During coating, at least one jet composed of a jet medium comprising the micro- or nanoscale particles to be introduced is directed onto the workpiece surface (2).
Abstract:
A component includes a catalyst surface having regions of CeO2 and regions of MnO2 that contact the regions of CeO2. Said material pairings may provide an improved catalytic effect compared to pure oxides. Said surfaces can, for example, also be used in indoor air purification to reduce the ozone content. The surface can, for example, be applied by coating the component and processed by cold-gas spraying of, for example, particles made of MnO2, to which CeO2 is applied.
Abstract:
A component has a catalyst surface including metal regions and regions of MnO2 contacting the former, wherein the metal regions are made of Co and/or Sn and/or Zn (or alloys of said metals). Said material pairings achieve a significantly improved catalytic effect in comparison to the pure metals. Said surfaces can be used, for example, in room air purification for reducing ozone content. The surface can be applied, for example, by coating the component, wherein the metal region and the region of MnO2 are applied in two layers.
Abstract:
A method for the electrochemical coating of a workpiece surface (2), micro- or nanoscale particles being introduced into the coating is provided. During coating, at least one jet composed of a jet medium comprising the micro- or nanoscale particles to be introduced is directed onto the workpiece surface (2).
Abstract:
There is described a counter-electrode arrangement that, e.g. can be used when coating and removing coatings from turbine blades, and to a method for the operation thereof. The counter-electrode arrangement comprises a reference electrode arrangement that is connected to the counter-electrode in an electrically non-conductive manner via contact elements. During the treatment process, a balanced potential over the surface to be treated is created by adapting the reference electrode arrangement, which as individual electrodes, to a surface to be treated. In a method for operating the counter-electrode arrangement, a measuring current can be applied to this arrangement in a first step for creating a balanced potential. The individual electrodes of the reference electrode arrangement can be separately contacted in order to determine the respective local potential on the surface of the component to be treated. The counter-electrodes can be adjusted so that a balanced potential prevails on the individual electrodes. During the subsequent treatment of the workpiece, the individual electrodes are interconnected in parallel and used as a reference electrode for maintaining a required treatment potential.
Abstract:
Disclosed is a current-conducting system for a lamp with molybdenum foils, gas-tighly embedded in at least one end section of the lamp, at which at two opposite narrow ends in each case an outer current supply conductor and an electrode or an outer current supply conductor and an inner current supply conductor are arranged. According to the invention, the molybdenum foils, current supply conductors and/or electrodes are provided with a coating, at least in sections, that is formed in such a way that the adhesion properties to the glass are improved in the area of the coating, with the coating being applied to the current-conducting system by vacuum-arc ion implantation (Arc-PVD).
Abstract:
A method for applying a coating (23) to a part of a surface of a lamp (20). The aim is to provide a simple manner of applying exact coatings to parts of surfaces with complicated designs. To this end, the lamp is vacuum-coated. The parts of the surface of the lamp (20) that are not to be coated are covered by a mask (3) and at least one coat is applied to the non-covered parts of the surface. The mask (3) is located at a predetermined distance (d) from the part of the surface of the lamp (20) and the mask (3) is oriented in relation to an illumination element (2) or a base (21) of the lamp (20). The invention also relates to a coated lamp that is produced according to a method of this type.
Abstract:
The surface of a component includes metallic fractions of Ag and/or Ni, touching MnO2 fractions which provide an antimicrobial effect. When using toxicologically safe Ni, these antimicrobial surfaces can be used in the food industry, for example. The surface can, for example, be applied by way of a coating on the component with the metallic fraction and the MnO2 fraction applied in two layers.
Abstract:
A method electrochemically coats a substrate by brush plating. Particles are applied to the surface to be coated via a separated line system before the carrier for the electrolytes. The electrolyte is added to the carrier via a line system. The advantageous result thereof is that an agglomeration of the particles can be prevented because only a short time passes after the application of the particles until the formation of the layer. A device for electrochemical coating has two line systems for the cited purpose. The highly stressed surface components of rollers in rolling mills can be partially coated by the method.
Abstract:
The embodiments include a method for producing a coating through cold gas spraying. In the process, particles according to the embodiments are used which contain a photocatalytic material. In order to improve the effect of this photocatalytic material (such as titanium dioxide), a reactive gas can be added to the cold gas stream, the reactive gas being activated by a radiation source not shown, for example by UV light, on the surface of the coating that forms. This makes it possible to, for example, dose titanium dioxide with nitrogen. This allows the production of in situ layers having advantageously high catalytic effectiveness. The use of cold gas spraying has the additional advantage in that the coating can be designed to contain pores that enlarge the surface available for catalysis.