DEVICE FOR THE LASER-PLASMA SYNTHESIS OF VERY HARD MICROSTRUCTURED AND NANOSTRUCTURED COATINGS

摘要

The invention relates to techniques for producing microstructured and/or nanostructured protective and functional coatings on the surfaces of machine and mechanism components, pipes and pumps, housing components, and functional and load-bearing metal structures. A device for producing very hard coatings comprises a repetitively pulsed laser, a reaction chamber with a means for positioning an object to be treated, having a control processor, and an inlet for a stream of a working gas, a source of a working gas, a means for forming a stream of a working gas in the reaction chamber, and also a means for delivering laser radiation to the reaction chamber and focusing the beam, wherein the reaction chamber contains an inlet for a stream of a working gas and an inlet for laser radiation, and wherein the device further contains a device for the localized heating of the reaction zone and the simultaneous cooling of the edge of the reaction zone. The localized heating device contains a fan with a heater, which are mounted in a nozzle consisting of an outer and an inner annular nozzle, or a gas burner or a plasma torch, which generate a directed jet, with a liquid or atomized coolant being fed to the edge of said jet. The invention provides for improved performance and increased technological potential in the synthesis of coatings which are resistant to wear, impact, chemicals and corrosion, and also provides for a reduction in the intensity of residual laser radiation.