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

Volume

33

Issue

1

fYear

1997

fDate

1/1/1997 12:00:00 AM

Firstpage

410

Lastpage

412

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 (I_max=180 kA, T_max≈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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.560047

Filename

560047