Effect of the physical properties of a material on the electrode erosion in a high-current pulsed discharge

1992 ◽  
Vol 62 (1) ◽  
pp. 94-100
Author(s):  
A. Z. Aksel'rod ◽  
E. A. Popov
Keyword(s):  
Physical Properties ◽  
Electrode Erosion ◽  
High Current ◽  
Pulsed Discharge

OLIN C197

Alloy Digest ◽  
1999 ◽  
Vol 48 (1) ◽  
Keyword(s):  
Thermal Conductivity ◽  
Wear Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
High Performance ◽  
Corrosion And Wear ◽  
Contact Forces ◽  
High Current ◽  
Lower Strength ◽  
Current Carrying Capability

Abstract Olin C197 is a second-generation high performance alloy developed by Olin Brass. It has a strength and bend formability similar to C194 (see Alloy Digest Cu-360, September 1978), but with 25% higher electrical and thermal conductivity. High conductivity allows C197 to replace brasses and bronzes in applications where high current-carrying capability is required. Also, the strength of C197 provides higher contact forces when substituted for many lower strength coppers. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion and wear resistance as well as forming and joining. Filing Code: CU-627. Producer or source: Olin Brass.

SYLVANIA WN-103

Alloy Digest ◽  
1969 ◽  
Vol 18 (7) ◽  
Keyword(s):  
Shear Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
Base Alloy ◽  
High Strength ◽  
Heat Treating ◽  
Electrical Contacts ◽  
High Density ◽  
High Current

Abstract Sylvania WN-103 is a machinable tungsten-base alloy combining high density with high strength in both compression and tension. It is recommended for counterweights, gyroscope components and high current electrical contacts. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength as well as creep. It also includes information on forming, heat treating, machining, and joining. Filing Code: W-13. Producer or source: Sylvania Electric Products Inc..

Silicon on Insulator by High Dose Implantation

1984 ◽  
Vol 33 ◽  
Author(s):  
P. L. F. Hemment
Keyword(s):  
Physical Properties ◽  
Thermal Processing ◽  
Vlsi Circuits ◽  
Silicon On Insulator ◽  
High Dose ◽  
High Current ◽  
Processing Technologies ◽  
Oxygen Ions ◽  
High Doses ◽  
High Dose Implantation

ABSTRACTSilicon on insulator structures consisting of a buried dielectric, formed by the implantation of high doses of oxygen ions, have been shown to be suitable substrates for LSI circuits. The substrates are compatible with present silicon processing technologies and are confidently expected to be suitable for VLSI circuits. In this paper the microstructure and physical properties of this SOI material will be described and the dependence of these characteristics upon the implantation conditions and subsequent thermal processing will be discussed. With this information, it is then possible to outline the specification for a high current oxygen implanter.

Pulsed high-current discharge in water: adiabatic model of expanding plasma channel and acoustic wave

2021 ◽  
Author(s):  
Andrey V. Kozyrev ◽  
Andrey A. Zherlitsyn ◽  
Natalia S. Semeniuk
Keyword(s):  
Acoustic Wave ◽  
Pulsed Power ◽  
High Current ◽  
Number Density ◽  
Pulsed Discharge ◽  
Current Channel ◽  
High Current Discharge ◽  
Isothermal Plasma ◽  
A Current ◽  
Good Agreement

Abstract This paper presents the results of a theoretical and experimental study of the use of a pulsed discharge in water to obtain a strong acoustic wave in a liquid medium. A discharge with a current amplitude of 10 kA, a duration of 400 ns, and an amplitude pulsed power of 280 MW in water at atmospheric pressure created an expanding acoustic wave with an amplitude of more than 100 MPa. To describe the formation of the discharge channel, an isothermal plasma model has been developed, which made it possible to calculate both the expansion dynamics of a high-current channel and the strong acoustic wave generated by it. Our calculations show that the number density of plasma in the channel reaches 10^20 cm^(–3), while the degree of water vapour ionization is about 10%, and the channel wall extends with a velocity of 500 m/s. The calculations for the acoustic wave are in good agreement with measurements

scholarly journals Experimental Stand for Investigations of Insulator Degradation and Electrode Erosion in High-current Breaker

2017 ◽  
Vol 4 (2) ◽  
pp. 120-123 ◽  
Author(s):  
A. V. Budin ◽  
M. E. Pinchuk ◽  
V. V. Leontev ◽  
A. G. Leks ◽  
N. K. Kurakina ◽  
...  
Keyword(s):  
Experimental Data ◽  
Discharge Chamber ◽  
Diagnostic Techniques ◽  
Electrode Erosion ◽  
High Current ◽  
Capacitive Energy Storage ◽  
Experimental Stand ◽  
Advanced Composite Materials ◽  
Preliminary Experimental Data ◽  
Gas Blowing

An experimental stand for studies of electric arc, electrode erosion and insulator degradation processes in high-current circuit breakers and some preliminary experimental data is described. The setup includes a discharge chamber, a capacitive energy storage with capacitance of 0.11 F, voltage up to 10 kV, and all necessary diagnostic techniques. The stand is designed for modeling current pulse with amplitude of 3–150 kA and duration of the first half period of 1.0–3.0  ms during the process of disconnecting the ring and the pin contacts. The arc is cooled by transverse gas blowing at pressure in the chamber of 0.5–3 MPa. Acquired experimental data can be used for verification of the modelling results of the heat transfer processes in the discharge chamber. At the stand, advanced composite materials based on carbon and iron-copper pseudoalloy are studied.

Nonthermal decomposition of nitrous oxide in a high-current pulsed discharge

2003 ◽  
Vol 29 (6) ◽  
pp. 517-527 ◽  
Author(s):  
D. V. Zatsepin ◽  
S. M. Starikovskaya ◽  
A. Yu. Starikovskii
Keyword(s):  
Nitrous Oxide ◽  
High Current ◽  
Pulsed Discharge ◽  
Decomposition Of Nitrous Oxide

Electrode erosion from high current moving arcs

1989 ◽  
Vol 17 (5) ◽  
pp. 811-817 ◽  
Author(s):  
F.M. Lehr ◽  
M. Kristiansen
Keyword(s):  
Electrode Erosion ◽  
High Current

scholarly journals BURNING MODES OF A BIPOLAR PULSED DISCHARGE IN CO2

2020 ◽  
pp. 159-164
Author(s):  
V.A. Lisovskiy ◽  
S.V. Dudin ◽  
M.M. Vusyk ◽  
V.D. Yegorenkov
Keyword(s):  
Duty Cycle ◽  
Voltage Drop ◽  
Current Mode ◽  
High Current ◽  
Pulsed Discharge ◽  
Frequency Range ◽  
High Duty Cycle ◽  
Cycle Amplitude ◽  
Self Bias ◽  
Voltage Axis

We have studied the burning modes of the bipolar pulsed discharge in CO2 within the frequency range between 20 and 300 kHz and the duty cycle of 11...97 %. The current and voltage waveforms within the pressure range between 0.1 to 1 Torr were registered. We have established that the duty cycle values may affect the axial structure of the discharge considerably causing the voltage drop redistribution across the electrodes. The bipolar pulsed discharge may burn in a high-current mode (with cathode sheaths near every electrode) as well as in a low-current one (with a low discharge current and weak glow). The transition between these modes may be observed at high duty cycle values. We have found that one may make a shift of the complete oscilloscope voltage pattern higher or lower along the voltage axis and produce a self-bias constant voltage the value and sign of which depend on the duty cycle, amplitude and frequency of the applied voltage.

WIELAND-B14

Alloy Digest ◽  
2002 ◽  
Vol 51 (8) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
Heat Treating ◽  
High Current ◽  
Electrical Systems ◽  
Reasonable Cost

Abstract Wieland-B14 is a phosphor bronze with a composition that optimizes conductivity while maintaining a reasonable cost. Application is in high-current connectors, especially for car electrical systems. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: CU-686. Producer or source: Wieland Metals Inc., Wieland-Werke AG.

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