Arc-anode attachment area in DC arc plasma torch

0468666 - ÚFP 2017 DE eng C - Conference Paper (international conference)
Ondáč, Peter - Mašláni, Alan - Hrabovský, Milan
Arc-anode attachment area in DC arc plasma torch.
The 14th High-Tech Plasma Processes Conference (HTPP 14). Munich: Universität der Bunderwehr München, 2016, s. 127-128. ISBN N.
[High-Tech Plasma Processes Conference (HTPP 2016)/14./. Munich (DE), 03.07.2016-07.07.2016]
R&D Projects: GA ČR(CZ) GA15-19444S
Institutional support: RVO:61389021
Keywords : Plasma * arc * anode * attachment * erosion
Subject RIV: BL - Plasma and Gas Discharge Physics
https://htpp2016.sciencesconf.org/conference/htpp2016/proceedings.pdf

The need to improve plasma spraying processes, waste treatment and plasma synthesis has motivated us to investigate plasma in the anode attachment area of DC arc plasma torch. Studying the processes in this area helps to extend the lifetime of the anode, stabilize the plasma flow and better understand a movement of the anode attachment in the restrike mode. For this mode, the anode attachment
moves periodically downstream along the upper anode surface. The movement is the result of the imbalance between the drag force caused by the interaction of the incoming plasma flow over the arc attachment and the electromagnetic force caused by the double curvature of the arc [1]. However, the cause of the second curvature of the arc close to the anode surface and the arc reattachment process is still
not a well understood phenomenon. In the majority of pub- lications, the anode processes were observed only indirectly. This study follows publication [2].

Permanent Link: http://hdl.handle.net/11104/0266479