Impact of anode evaporation on the anode region of a high-intensity argon arc

Journal Article · Sat Jun 01 04:00:00 EDT 1985 · Plasma Chem. Plasma Process.; (United States)

DOI:https://doi.org/10.1007/BF00566213· OSTI ID:5349075

Etemadi, K; Pfender, E

Experimental studies of a free-burning, high-intensity argon arc operated at 800 Torr with a solid, molten, or resolidified copper anode demonstrate that the cathode region is not affected by Cu vapor from the anode. Also Cu vapor concentrations in the arc core (beyond 1 mm from the anode surface) are negligible. In contrast, there is a strong effect of the Cu vapor on the anode region of the arc. The arc fringes become electrically conducting due to the presence of Cu vapor, resulting in a flattening of the current density distribution and a corresponding drop of the temperature in the arc core. At the same time, the overall arc voltage shows a slight drop (<1 V). In the case of the resolidified anode, the overall arc voltage increases, which seems to be associated with the distribution of the stagnation flow in front of the anode due to a dip in the center of the anode.

• Research Organization: Univ. of Minnesota, Minneapolis, MN
• OSTI ID: 5349075
• Journal Information: Plasma Chem. Plasma Process.; (United States), Journal Name: Plasma Chem. Plasma Process.; (United States) Vol. 5:2; ISSN PCPPD
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320303 -- Energy Conservation
Consumption
&amp; Utilization-- Industrial &amp; Agricultural Processes-- Equipment &amp; Processes
36 MATERIALS SCIENCE
360105* -- Metals &amp; Alloys-- Corrosion &amp; Erosion
ANODES
ARC FURNACES
ARGON
CHARGED PARTICLES
CONTAMINATION
COPPER
COPPER IONS
CURRENT DENSITY
CURRENTS
EFFICIENCY
ELECTRIC ARCS
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ELECTRIC FURNACES
ELECTRICAL PROPERTIES
ELECTRODES
ELEMENTS
ENERGY EFFICIENCY
EVAPORATION
FLUID FLOW
FLUIDS
FURNACES
GAS FLOW
GASES
IONIZATION
IONS
MATERIALS TESTING
METALS
NONMETALS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PLASMA
RARE GASES
STAGNATION
TESTING
TRANSITION ELEMENTS
VAPORS
VOLTAGE DROP