Incorporation of realistic models of plasma-electrode interaction remains a bottleneck in the
development of predictive models of devices with high-pressure arcs. The most important …

The results of studies of the microstructure in the initial phase of the discharge in air in the
gap between the pin and a plane 1.5 mm long are presented. Measurements show that …

The parameters of a non-pulsed dc arc discharge of atmospheric pressure in argon were
experimentally studied, and the chemical composition of the cathode surface in the arc …

Scandate cathode as a thermionic electron emission material has attracted broad interest
owing to its high electron emission capability. Despite the large number of studies on the …

Barium (Ba)–oxygen (O) coatings were experimentally found to be very efficient to reduce
the work function of tungsten (W). Following this idea, in this work, we theoretically …

Hafnium (Hf) has been used as a cathode material for thermionic emission in high
temperature environments for a long time. However, the effect of grain boundaries (GBs) on …

In this work the destruction mechanism of a pure tungsten cathode during the initiation of
direct current arc is studied. The experimental work shows that the cathode resides in liquid …

The paper considers various causes of explosions on the cathodes surface in the region of
arc attachment in a direct current arc discharge. Estimates of the characteristic times of the …

In this work, the behavior of cathodes made from pure tungsten and pure hafnium in the
direct current electric arc at 200 A and in atmospheric pressured argon medium was …

The effect of propane-butane addition to the plasma-forming gas on the state of cathodes
with inserts made from lanthanated tungsten and hafnium is investigated. With a small …