Abstract
The initial emission-adsorption characteristics of the electrodes of single-element EGC thermionic energy converters were studied. The basic processes occurring at the electrodes and in the interelectrode space at the initial stage of operation, which ultimately affect the stability of the emission-adsorption characteristics of the electrodes, were examined. The dominant factors singled out are the evaporation of the emitter material and the transport of this material through the gap onto the collector and the effect of the active components of the residual gases (oxygen and carbon monoxide) in the interelectrode gap on the electrode properties. The surface state of the electrodes varies during the thermal vacuum preparation and during placement of the EGC into the working regime as well as in the nominal regimes. 10 figures, 17 references.
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