Impact of anode evaporation on the anode region of a high-intensity argon arc
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), Vol. 5:2
- Country of Publication:
- United States
- Language:
- English
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32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
ANODES
EVAPORATION
ARC FURNACES
ENERGY EFFICIENCY
COPPER
IONIZATION
ELECTRIC ARCS
CONTAMINATION
VOLTAGE DROP
VAPORS
ARGON
COPPER IONS
CURRENT DENSITY
ELECTRIC CONDUCTIVITY
GAS FLOW
MATERIALS TESTING
PLASMA
STAGNATION
CHARGED PARTICLES
CURRENTS
EFFICIENCY
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ELECTRIC FURNACES
ELECTRICAL PROPERTIES
ELECTRODES
ELEMENTS
FLUID FLOW
FLUIDS
FURNACES
GASES
IONS
METALS
NONMETALS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
RARE GASES
TESTING
TRANSITION ELEMENTS
360105* - Metals & Alloys- Corrosion & Erosion
320303 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Equipment & Processes