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High Temperature Material Processes (An International Quarterly of High-Technology Plasma Processes)

An International Journal

ISSN for PRINT: 1093-3611

Institutional price:	$604.00
Issues per year:	4

Best Paper Award Selection - Editorial Board Site

2008, Volume12

167 pages

DOI: 10.1615/HighTempMatProc.v12.i1-2

Issue price - $362.00

A FIRST ATTEMPT TO CONNECT A MICROSCOPIC VISION OF THE CATHODE FRAGMENT AND MICRO SPOT TO A MACROSCOPIC APPROACH OF THE CATHODE ARC ROOT: A MULTI-SCALE PROBLEM

J. Rossignol
Institut Carnot de Bourgogne, Bâtiment Mirande − Chimie 9, avenue Alain Savary, BP 47870, 21078 Dijon Cedex − France

Ph. Teste
Laboratoire de Génie Electrique de Paris, Plateau de Moulon 11 rue Joliot Curie, SUPELEC, CNRS, France, 91192 Gif sur Yvette

ABSTRACT

In this paper we propose an explanation for the great dispersion (several orders of magnitude) which exists in literature for the various values of essential parameters (such as surface power density or current density) of influence on the power balance at the surface of a copper cathode submitted to an electric arc. In this work this dispersion is explained by the difference in the space and time scales considered in the different works published. A simple model is proposed which constitutes a first step allowing explaining the difference in values for the surface power density brought to the cathode surface.