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ISSN Druckformat: 1093-3611
ISSN Online: 1940-4360
IF:
0.4
Immediacy Index:
0.1
Eigenfactor:
0.00005
JCI:
0.07
SJR:
0.198
SNIP:
0.48
CiteScore™::
1.1
H-Index:
20
Indexed in
ELECTRIC PROBE INVESTIGATION OF ARC ANODE REGION IN PLASMA TORCH
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ABSTRAKT
Electric probes were used for an investigation of an intermediate layer between an arc and an anode surface in a region around an anode attachment. Probe current and potential were measured for different positions. Resistance of the intermediate layer between anode surface and arc column and power dissipation in the layer were determined from the measurements. Anode attachment position on the anode surface was determined and compared to the results of the probe measurements. Measured currents on probes in the fringes of the arc column prove existence of a conductive layer between the arc column and the anode surface. Relatively high diffuse currents were found, flowing between the arc column and the anode in the positions upstream of the anode attachment. These currents may cause the heating of partially ionised gas in the layer between the anode and the arc column and subsequently can lead to formation of new anode attachment by thermal re-ignition.
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Kavka T., Matějíček J., Ctibor P., Mašláni A., Hrabovský M., Plasma Spraying of Copper by Hybrid Water-Gas DC Arc Plasma Torch, Journal of Thermal Spray Technology, 20, 4, 2011. Crossref
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Ondac P., Maslani A., Hrabovsky M., Jenista J., Measurement of Anode Arc Attachment Movement in DC Arc Plasma Torch at Atmospheric Pressure, Plasma Chemistry and Plasma Processing, 38, 3, 2018. Crossref