Title :
Erosion of explosively compacted Mo/Cu electrodes in high-current arc discharges
Author :
Shvetsov, G.A. ; Mary, V.J. ; Anisimov, A.G. ; Stankevich, S.V. ; Solovov, A.V. ; Teslenko, T.S.
Author_Institution :
Lavrentyev Inst. of Hydrodynamics, Acad. of Sci., Novosibirsk, Russia
fDate :
1/1/1997 12:00:00 AM
Abstract :
The erosion of molybdenum-copper composites produced by the explosive powder-compacting method has been studied in order to analyze the potential for their use as railgun electrodes. The results of experiments have shown that the erosion of Mo/Cu compacts at the same values of current impulse (Imax=180 kA, Tmax≈50 μs, ∫Idt=15 C, ∫I2dt=1.7·106 A 2·s) is about 10 times less then the erosion of pure copper and is about 3 time less then the erosion of pure molybdenum. The loss of mass data curve has a flat minimum for molybdenum contents of 20 to 80 wt.%
Keywords :
arcs (electric); composite materials; copper; densification; electrodes; molybdenum; powder metallurgy; railguns; wear; Mo-Cu; erosion; explosive powder-compacton; high-current arc discharge; molybdenum-copper composite; railgun electrode; Arc discharges; Compaction; Composite materials; Conducting materials; Copper; Electrodes; Explosives; Hydrodynamics; Metal-insulator structures; Powders;
Journal_Title :
Magnetics, IEEE Transactions on
