VORRICHTUNG ZUR BESCHICHTUNG VON SILIZIUMCARBIDFASERN

摘要

Process for coating silicon carbide fibers (7) with titanium-based alloy comprises: (1) generating electrode-free high pressure plasma (3) in microwave- or radiowave-transparent working tube (2); (2) maintaining plasma; and (3) passing plasma into working space (5) as plasma jet (6) through nozzle (4) to coat fibers. Process for coating silicon carbide fibers (7) with a titanium-based alloy by plasma spraying, the titanium-based alloy being sprayed onto the silicon carbide fibers by way of an electrode-free high-pressure plasma, comprises: (1) generating an electrode-free high pressure plasma (3) in a microwave- or radiowave-transparent working tube (2) with a gas inlet (8) opening and a gas outlet opening by ignition of a process gas which has been introduced into the working tube at a pressure p.gtoreq.1 bar; (2) maintaining the plasma by absorption of microwaves or radiowaves; and (3) passing the plasma into the working space (5) as a plasma jet (6) through a nozzle (4) arranged at the gas outlet opening of the working tube to spray coat fibers. An Independent claim is included for device for performing coating that comprises at least two high-pressure plasma torches, each torch producing one plasma jet without using electrodes, that are arranged symmetrically with respect to one another so that the plasma jets meet at least at one point which is where the silicon carbide fibers are guided.