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

ISSN for PRINT: 1093-3611

For Online Access

Best Paper Award Selection - Editorial Board Site

2004, Volume8

Issue 4

169 pages

DOI: 10.1615/HighTempMatProc.v8.i4

Issue price - $144.00

C. Chazelas
Laboratoire Sciences des Procédés Céramiques et de Traitements de Surface, ENSIL,16 rue d'Atlantis, 87068 LIMOGES Cedex, France

J. F. Coudert
PCTS -CNRS UMR 6638, University of Limoges, 123 av. A. Thomas, 87060 Limoges cedex, France

Pierre Fauchais
Laboratoire Sciences des Precedes Ceramiques et de Traitements de Surface, UMR 6638 CNRS-Universite de Limoges, faculte des Sciences et Technique, conventionne avec le CEA n° M08, France

A. Grimaud
Laboratory UMR CNRS 6638, 123 avenue Albert Thomas, 87060 Limoges cedex, Fance

The experimental study of heat transfer between a direct current electric arc and its anode is of primary importance for the understanding of mechanisms involved, for example, in plasma cutting, metal purification, extractive metallurgy, powder synthesis.... The ultimate objective of this work is to produce nanometric particles from the condensation of metallic vapors obtained by controlled evaporation of the anode material. A transferred arc reactor was designed to generate a stable arc jet, less than 3mm in diameter, using pure argon, argon-hydrogen mixture or nitrogen as plasma forming gases (4−10 slm) and power supplied by a current regulated source (I = 15−40A). According to the nozzle internal diameter used to constrict the arc, the jet velocity is over 1000 m.s⁻¹ and the angle between the jet axis and the normal to the anode surface can be changed from 0° to 85°. Arc voltage fluctuations and heat power to the anode were measured for various experimental conditions, leading to different attachment modes, as testified by video-records.

DOI: 10.1615/HighTempMatProc.v8.i4.80 Download article, 585-598 pages

Article price - $35.00

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