Pulsed plasma flow interaction with metal alloys surface

The pulsed plasma accelerator (PPA) with energy storage capacity 70 uF, 30 kV is created for obtaining of powerful plasma flows. High power fluxes (up to 60 J/cm, 14 us duration) generated by PPA, have been used in different applications such as surface erosion, spraying and modification. In this work is researched so called “continuously filled” mode, and then the working gas fills all space between to coaxial electrodes. The researches was shown, that the plasma parameters and the plasma formation peculiarities depended on initial gas pressure. So, when the pressure in the chamber below 10^-1 Torr. the distribution of current has diffused type and plasma has the maximum parameters specified above. At higher pressure current distributed predominantly in radial direction, but the plasma have significantly lower parameters. The parts of researched devoted to problem of material processing and modification of it properties. As same case, the microhardness of common and instrumental steels, irradiated by plasma fluxes, improved up to 5-7 times, and the depth of modification up to 200 um.