图书馆订阅: Guest
Begell Digital Portal Begell 数字图书馆 电子图书 期刊 参考文献及会议录 研究收集
高温材料处理:国际期刊
ESCI SJR: 0.176 SNIP: 0.48 CiteScore™: 1.3

ISSN 打印: 1093-3611
ISSN 在线: 1940-4360

高温材料处理:国际期刊

DOI: 10.1615/HighTempMatProc.v2.i1.40
pages 35-47

LARGE AMPLITUDE OSCILLATIONS IN ELECTRIC ARCS SUSTAINED ON HETEROGENEOUS ELECTRODES IN GASEOUS ATMOSPHERE

J. L. Doremieux
CNRS-CECM 15 Rue Georges Urbain 94407 VITRY cedex
R. Haug
Universite PARIS XI, Laboratoire de Physique des Gaz et des Plasmas, Equipe DEE SUPELEC Plateau du Moulon 91190 Gif-sur-Yvette

ABSTRACT

In an electric arc, which is free burning in a gaseous atmosphere between electrical contact pieces, or during etching by arcing of oxidised metal surfaces, one can observe large amplitude voltage oscillations. These oscillations should be distinguished from the ordinary voltage noise observed in most of electric arcs. They are related on the nature of the cathode material, notably on the presence on the surface of particles or layers of insulating or low conduction material, such as oxides or nitrides. The light intensity emitted by the arc is time related with the arc voltage oscillations. Interpretation of the origin of these oscillations involves temperature variations on the cathode surface and in the plasma column, and fluctuations of the concentration of the metal vapour content in the plasma.


Articles with similar content:

Chlorella vulgaris LARG -3 in magnetic field
International Journal on Algae, Vol.2, 2000, issue 2
I. N. Yurkova, N. F. Kushchevskaya, V. R. Estrela-Liopis, T. M. Shvets
INVESTIGATIONS OF THE FLUCTUATIONS IN THE PLASMATRON WITH THE EXPANSION CHANNEL AS ELECTRODE
Progress in Plasma Processing of Materials, 1999, Vol.1, 1999, issue
A.S. Tyuftyaev, V.K. Korolev, V.I. Kalinin, S.A. Tereshkin, Oleg A. Sinkevich, E. Kh. Isakaev
INVESTIGATION OF STRUCTURE OF TURBULENT BOUNDARY LAYER BETWEEN THERMAL PLASMA JET AND AMBIENT AIR
Progress in Plasma Processing of Materials, 1999, Vol.1, 1999, issue
Milan Hrabovsky, M. Konrad, Vladimir Kopecky
Radial and axial distributions of the electron density and temperature in a cascade arc plasma
High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes, Vol.10, 2006, issue 1
I. Ksiazek, E. Pawelec
RADIATIVE TRANSFER DURING A PULSED LIGHTNING ARC ON A METALLIC PLATE
International Heat Transfer Conference 16, Vol.22, 2018, issue
C. Zaepffel, R. Sousa Martins, Philippe Riviere, Anouar Soufiani, L. Chemartin