COMPOSITION AND PARAMETERS OF SPARK PLASMA IN AIR WITH ELECTRODES FROM A TUNGSTEN-COPPER COMPOSITE

Results of the numerical simulation of the parameters and composition of a spark plasma in air with due regard for the electrode evaporation are described. The model includes the equations of balance for energy and particles, as well as the equilibrium equations for the ionizatio n-recombination and dissociation-molization reactions of the component s of basic gases and vapors of electrodes. Spectroscopic measurements and model calculations were performed to derive data on the compositio n of plasma, pressure, the rate of flame propagation, and the rate of evaporation of components of W-Cu electrodes manufactured from powders of different dispersity using liquid-phase impregnation and hydrogen reduction of oxides.