Spark-erosion characteristics of graphite and CO gas
The spark erosion characteristic of high-purity graphite and CO for 1-kHz gas blown rail-gap applications has been experimentally evaluated. The test configuration simulates a single channel, 1650-A arc discharge per linear inch of electrode length, with a 44-kV self-breakdown voltage and a transverse gas flow of 98 m/s. The dielectric gas was seeded with a small quantity of azulene vapor and a downstream uv preionization spark was used to assist the self-breakdown of the test electrodes. The erosion characteristics of other, more conventional electrode materials and dielectric gases were also examined and the results are presented graphically. Commerically pure tungsten in air was determined to exhibit the least erosion rate (2.1 x 10/sup -6/ cc/C) for this duty, as compared to graphite and CO (75 x 10/sup -6/ cc/C).
- Research Organization:
- Los Alamos National Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5226909
- Report Number(s):
- LA-UR-82-1606; CONF-820626-5; ON: DE82018356
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360105 -- Metals & Alloys-- Corrosion & Erosion
360604* -- Materials-- Corrosion
Erosion
& Degradation
AIR
AZULENE
CARBON
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
ELECTRIC DISCHARGES
ELECTRIC SPARKS
ELECTRODES
ELEMENTAL MINERALS
ELEMENTS
EROSION
FLUIDS
GASES
GRAPHITE
HYDROCARBONS
MATERIALS TESTING
METALS
MINERALS
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
TESTING
TRANSITION ELEMENTS
TUNGSTEN