The influence of high-voltage electrical discharge on dispersion and structure of B4C powder

The use of machine learning methods to predict the processes and results of high-voltage electric discharge processing of titanium powder in kerosene with the implementation of volume-distributed multi-spark discharge

“…In the interval of interelectrode gap values from 20 mm to 36 mm and the number of pulses from 2,000 to 4,000, the pressure on the wall of the processing chamber is equal to 120 MPa. As a result of HVED treatment, due to the hydrodynamic impact and the impactof the plasma of the discharge channel on titanium powder in kerosene, its grinding, spheroidization of particles and chemical transformations with the formation of titanium carbide take place [7][8][9].…”

“…The results of titanium powder high voltage electric discharge treatment in kerosene with various electrode systems obtained in the period from 2013 to 2021 and presented in works [7][8][9] were used as data for modeling. The use of different electrode systems makes it possible to implement a different distribution of plasma in the metal powderliquid system, which affects both the hydrodynamic properties of the liquid and the process of grinding and phase transformations of titanium powder.…”

“…The use of different electrode systems makes it possible to implement a different distribution of plasma in the metal powderliquid system, which affects both the hydrodynamic properties of the liquid and the process of grinding and phase transformations of titanium powder. The use of a single-point system allows you to implement a spark discharge (SD), and the use of a threepoint system leads to the realization of a volume-distributed multi-spark discharge (VMD) [7][8][9] (see figure 4). As the results of SD implementation are already sufficiently presented in the cited works, the VMD needs a more detailed consideration.…”

Capacitor Electrical Discharge Consolidation of Metallic Powders—A Review

“…They also inquired into the possibilities of EDC. Work carried out in Mykolaiv, Nikolaev and Kiev (Ukraine) deals both with material production [79] and mainly with discharges in particle-fluid suspensions and the effect on powder particles, as reported from 2011 to 2017 [80,81]. Nevertheless, regarding consolidation of powders, the most extensive research has been carried out in Russia.…”

“…Nanocrystalline MA Nb-23Al powders were studied in the US [71,129]. Diamond powder [130] and B 4 C powder suspensions [81] have been treated by electric pulses in Ukraine.…”