High Temperature Material Processes (An International Quarterly of High-Technology Plasma Processes) An International Journal

ISSN for PRINT: 1093-3611

For Online Access

Best Paper Award Selection - Editorial Board Site

2006, Volume10

Issue 4

154 pages

DOI: 10.1615/HighTempMatProc.v10.i4

Issue price - $155.00

O. Chumak
Thermal Plasma Department, Institute of Plasma Physics AS CR, Za Slovankou 3, 18200, Praha 8, Czech Republic

Milan Hrabovsky
Thermal Plasma Department, Institute of Plasma Physics, Za Slovankou 3, 18200, Praha 8, Czech Republic

T. Kavka
Thermal Plasma Department, Institute of Plasma Physics AS CR, Za Slovankou 3, 18200, Praha 8, Czech Republic

Vladimir Kopecky
Thermal Plasma Department, Institute of Plasma Physics AS CR, Za Slovankou 3, 18200, Praha 8, Czech Republic

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.

DOI: 10.1615/HighTempMatProc.v10.i4.30 Download article, 515-524 pages

Article price - $35.00

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