摘要:
An embodiment of the invention relates to the use of electromagnetic fields for influencing combustion processes. According to an embodiment of the invention, the flame is controlled by the coupling of repeated, inductive, pulsed energy. The associated device uses at least one induction coil that at least partially surrounds the flame and the device is equipped with a controllable switch or a high frequency generator.
摘要:
Switching components with contact parts that are mounted on a contact carrier in a switch housing may include devices for monitoring the contact erosion. The contact carrier may be split (sub-divided) and contact parts can be slotted at the rear and mounted on the sub-divided contact carrier. Thus, the oscillation response (vibration response) of the contact carrier in particular can be used as a measure of the erosion of the contact parts.
摘要:
The plasma produced by means of microwaves in the presence of a magnetic field and a gas serves to coat a substrate which is situated in a chamber having metal walls. The microwaves are repeatedly reflected at the metal walls, so that the chamber has numerous microwave modes. By means of permanent magnets, which are placed either inside the chamber or outside the chamber in the vicinity of the substrate that is to be coated, it is possible to produce within this chamber an electron-cyclotron resonance which permits a locally controlled ignition of the plasma.
摘要:
A method for producing amorphous carbon coatings on substrates by degrading a gaseous hydrocarbon compound in an ionized gas atmosphere within a reaction chamber. An electromagnetic alternating field is used for the excitation of the plasma. To achieve the object of increasing the deposition rate and permitting substrates even of great surface area to be uniformly coated, the frequency of the electromagnetic alternating field is selected in the microwave region (915 to 2,540 MHz). Furthermore, the microwave energy is put into the gaseous atmosphere by means of at least one ladder-type waveguide situated outside of the reaction chamber. The invention also relates to a substance provided with an amorphous carbon coating, in which an adhesion-mediating coating consisting of a polymer from the group of the siloxanes or silazanes is provided between the substrate and the amorphous carbon coating.
摘要:
A magnetron cathode for cathodic evaporation apparatus with a target holder (10) for releasably securing a plate-like target (9). The associated magnet arrangement (7) has pole faces (7c, 7d) for producing at least one circumferentially closed tunnel of magnetic field lines which overlaps the target. The magnet arrangement (7) is accommodated in a housing of non-ferromagnetic material which extends over the pole faces. To increase the utilization factor of the target material without the pole faces or housing parts participating in the atomization process,(a) the projections of the target (9 ) and the pole faces (7c, 7d) in a common plane parallel to the target face (9a) do not intersect each other,(b) in the zone of the pole faces (7c, 7d), the housing (16) is extended in the atomization direction in front of the target face (9a) or in the extreme case lies in the plane of the target face (9a), and(c) the housing (16) together with the magnet system (7) is electrically insulated as regards both the target holder (10) and earth (4).
摘要:
In particular for exhaust-gas purification, different processes have been proposed. According to the invention, the polluted exhaust gas flows through a reactor volume to which non-thermal gas discharges are applied, while being brought into contact with a solid reducing agent at least once, and preferably several times. The reducing agent can, in particular, consist of carbon fibers. A suitable device for combining dielectric barrier discharges with the reduction has means for field enhancement substantially periodically spaced in the reactor.
摘要:
Device for the plasma treatment of substrates (7) in a high frequency-excited plasma discharge between two electrodes (3, 8), supplied by a high-frequency source (6). The first electrode is constructed as a hollow anode (3) and the second electrode (8), which carries the substrate (7), is deposited in front of the hollow space (10) of the hollow anode or can be passed by this. Moreover, the hollow anode (3) has an edge (9), which is drawn out in the direction of the second electrode (8) and which, relative to the second electrode, forms a gap s.sub.1 all around that does not exceed 10 mm in width. In order to form the electrode so that the gap width is not a critical feature, projections (12) are disposed in the hollow space (10) of the hollow anode (3), said projections increasing the internal surface area (11) of the hollow anode (3). Preferably, these projections (12) are constructed as rib structures, which may also assume a honeycomb form.
摘要:
Apparatus for coating substrates by means of a reaction for depositing atoms or molecules which is initiated by a plasma. A reaction chamber (1) is equipped with at least one window (22, 23), penetrable by microwaves, with at least one wave-guide structure (16, 17), arranged outside the chamber (1) and in front of the window (22, 23), and with a distributing means (25) discharging into the chamber.According to the invention and for the purpose of achieving the object of facilitating inspection and repairs, the window (22, 23) penetrable by microwaves, the one or more wave-guide structures (16, 17) and the distributing means (25) are all secured in or on a support frame (10), which can be removed, or swung away, from the reaction chamber (1) as a single unit.
摘要:
A magnetron cathode for sputtering ferromagnetic targets. The magnet system consists of magnet poles of opposite polarity lying one within the other disposed on a basic cathode body. Between the target and the pole shoes, which consist of target material, two circumferential air gaps in the direction of the depth of the system are formed. The surfaces of projection of the magnet poles and target do not overlap. For the purpose of making the target ablation uniform while simultaneously achieving high sputtering rates, the pole shoes are separated, in accordance with the invention, each by a distance S from the magnet poles. The magnet poles lie in an area which runs from a plane passing through the sputtering surface in the direction of the depth of the system. Between the pole shoes and the target, on the one hand, and the magnet poles on the other, there is disposed a thermally conductive metal body which is in communication with at least one coolant passage and consists of a nonferromagnetic material.
摘要:
The invention relates to apparatus for producing a microwave plasma for the treatment of substrates, and in particular for the plasma polymerization of monomers for coating substrates. The apparatus consists of a reaction chamber with a carrier for conveying the substrates and a way for maintaining an atmosphere of ionizable gases and monomers. The apparatus also has a first and at least one second wave-guide structure which are arranged at opposite acute setting angles to the surface of the substrate carrier and are each connected at one end to a microwave transmitter by way of a hollow conductor. Thus, the treatment intensities, i.e. the rates of deposition, are superposed, and this leads to greater uniformity in the properties of the product. The apparatus may also include angling the wave-guide structures toward each other and staggering crossbar structures in the wave-guides for further improvement.