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Progress in Plasma Processing of Materials, 2003

ISBN:
978-1-56700-192-1 (Print)
978-1-56700-447-2 (Online)

EXPERIMENTAL INVESTIGATION OF THE CATHODE SPOT PARAMETERS IN A MAGNETICALLY DRIVEN ARC

A. M. Essiptchouk
Instituto de Fisica "Gleb Wataghin", Universidade Estadual de Campinas, Unicamp, 13083-970, Campinas, Sao Paulo, Brazil; The Luikov Heat & Mass Transfer Institute, P. Brovki street, 15, 220072, Minsk, Republic of Belarus

A. Marotta
Institute of Physics, University of Campinas, UNICAMP, SP, Brazil

L. I. Sharakhovsky
Instituto de Fisica "Gleb Wataghin", Universidade Estadual de Campinas, Unicamp, 13083-970, Campinas, Sao Paulo, Brazil; The Luikov Heat & Mass Transfer Institute, P. Brovki street, 15, 220072, Minsk, Republic of Belarus

D. A. Bublievsky
Heat & Mass Transfer Institute, Academy of Sciences of Belarus, 15 P. Browky St., 220072 Minsk, Belarus; Instituto de Fisica "Gleb Wataghin", Universidade Estadual de Campinas, Unicamp, 13083-970, Campinas, Sao Paulo, Brazil

Abstract

Copper cathode spot parameters in magnetically driven arc have been measured as function of the magnetic field by using thermal methods. We found that the arc spot current density grows nonlinearly and the volt-equivalent - linearly with magnetic field. By using these results a recently published erosion model has been validated. This work can be used for better calculations of cold electrode erosion.