Abstract
The formation of jets is studied that accompanies the extrusion of a molten metal under the action of the plasma pressure from microcraters formed in the cathode spot during an operation of vacuum arc discharge. We have proposed an analytic model of the melt splashing that demonstrates the threshold behavior: the extrusion rate has to exceed some threshold that is caused by capillary forces. These forces, on the one hand, lead to the reverse motion of the extruded liquid with the Taylor–Culick speed and, on the other hand, to the azimuthal instability development of the liquid-metal rim on the crater contour. The threshold values of electric current flowing through the crater and plasma pressure, at which the formation of liquid-metal jets starts, are estimated.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
