The time of setting of a stationary charge of particles of copper and tantalum, heated up to the melting temperature due to the electric exchange with a condensed dispersion phase of its own oxide, is determined. It is also shown that, for every time moment, the falling metallic particle can be considered as the one having aquasistationary electric charge, due to the non-stationary heat exchange with the surrounding. Experimental data on the charge of copper particles and its cooling characteristics are presented.
The photos, which are done by an electron microscope, of the condensed disperse phase surrounding a high-temperature metal particle are presented. The dependence of the concentration of the condensed dispersive phase (CDP) which surrounds a high-temperature metal particle upon the temperature of the particle is obtained. The dependence of the concentration of electrons in CDP on the temperature of a particle is obtained. The condition of charge equilibrium of a metal particle with CDP surrounding it is obtained. The dependence of the equilibrium charge of a metal particle surrounded with CDP on the temperature of a particle in the positive and negative regions is obtained. The obtained results may be used in researches of the processes of burning of metallized fuels and in studies of dust plasma.
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