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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
SJR: 0.137 SNIP: 0.341 CiteScore™: 0.43

ISSN Imprimir: 1093-3611
ISSN En Línea: 1940-4360

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.v11.i1.120
pages 149-159

VARIATION OF ENERGY EFFICIENCY IN OXIDE REMOVAL USING CATHODE SPOTS WITH ELECTRODE-GAP WIDTH

K. Ishizaka
Department of Machine Intelligence and Systems Engineering, Akita Prefectural University 84-4 Tsuchiya-Ebinokuchi, Yurihonjo, Akita 015-0055, Japan
M. Sugimoto
Department of Machine Intelligence and Systems Engineering, Akita Prefectural University 84-4 Tsuchiya-Ebinokuchi, Yurihonjo, Akita 015-0055, Japan
Koichi Takeda
Department of Machine Intelligence and System Engineering, Akita Prefectural University, 84-4 Ebinokuchi Tsuchiya, Yuri-Honjo, Akita, 015-0055, Japan

SINOPSIS

Our recent work has revealed that two different mode discharges exist in a vacuum arc in the case of oxide removal from a metal surface. They are caused mainly by differences of electrode-gap width. Short electrode-gap widths of less than 25 mm decrease the discharge voltage and thereby lower electric energy consumption. New investigation with an electrostatic probe indicates that the reason for which such different discharge modes appear is the variation of potential drop near the anode. Experimental results are discussed in comparison with theoretical analyses.