The mechanism of formation of the droplets on the electrodes under the impact of the high power density streams

23rd International Conference on Vacuum Technique and Technology

Goncharov, V.D.^1 ; Sorokin, K.S.^1 ; Yashkardin, R.V.^1 ; Fiskin, E.M.^2

Saint Petersburg Electrotechnical University LETI, Laboratory of Electric Impulsive Technologies, Russia^1

Irkutsk State Technical University, Russia^2

关键词: Electrode surfaces;    High power density;    Measurements of;    Mechanism of formation;    Particles sizes;    Power densities;    Rayleigh instability;    Substrate surface;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/729/1/012009/pdf
DOI  :  10.1088/1742-6596/729/1/012009

来源: IOP

【 摘 要 】

The article contains a brief description of functioning principles of the device for creating ultradispersive powders of metals under the impact of electrically charged streams with power density about 108W/cm2. The results of atomic forced microscopy (AFM) measurements of surfaces of the electrodes exposed to dispergate the microdroplets, which allowed to study the droplets formation steps are presented. The results of AFM surfaces of the substrate surfaces to be inflicted by the dispergated droplets are presented. The dependency of the particles sizes on the distance between the electrode and substrate allows to consider the main mechanism of division the dispergated from the electrode surface droplets the Rayleigh instability.