V. P. Marin, С. М. Zhdanov, N. I. Pchelintseva

Issue materials on the basis of metal substrates with laminas of noble and rare metals have found wide application in the cathode materiology. It, first of all, concerns to cylindrical cathodes of the made СО2-lasers. Usually in such lasers the unobstructive cathodes made of strips of platinum, platinum-rhodic alloy or platinum with the particles crushed in its volume oxides (for example, СuО) are used. With the purpose of pinch of operational parameters and decrease of the rate of flux of precious metals it was offered platinum-zirconium or nickelcontaining alloy to superimpose on a substrate from the steel received by a method proskating prorolls. Such stratum thickness 10 - 40 microns is an effective area of the cathode, i.e. contacting with working gas medium of the CO2-laser. For improvement of parameters of cathodes of СО2-lasers from an outside surface of such material the stratum of copper is superimposed. This stratum then is translated in Cu2O. Manufacturing of cylindrical cathodes with an interior effective area is yielded by cutting down of preparations with the subsequent extract an elastic matrix on the strong punch with a moving clip. Cathodes with regenerators as alloys from Cu2O have shown high serviceability in lasers about the oxygencontaining medium: the discharge current has considerably increased, and the longevity has increased in 10 times. The material of regenerator Cu2O received on a stratum from nanoparticles Cu, appeared more effective. Such cathodes at improvement of modes of reception and aging will enable to exclude in the future application of precious metals in devices about oxygencontaining mediums and to provide longevity of the made СО2-lasers more than 10000 clocks (in comparison with 500 hour for other known cathodes without use of precious metals).