DocumentCode :
3545077
Title :
PPPS-2013: This is a sample abstract submission: Calculation of DC arc plasma torch current-voltage characteristics
Author :
Djebarni, L. ; Mebdoua, Y.
Author_Institution :
Centre de Dev. des Technol. Av., Algiers, Algeria
fYear :
2013
fDate :
16-21 June 2013
Firstpage :
1
Lastpage :
1
Abstract :
Summary form only given. Plasma spraying is mainly employed for surface treatment providing coating for protection of materials against wear, erosion and corrosion. Improving coating quality requires a better understanding of the behavior of the arc created inside the direct current arc plasma torches1, 2. The present work is devoted to the determination of plasma torch parameters namely, working voltage and current of plasma torch, using an analytical calculation on the cathode spot parameters. A model of a heat transfer in the cathode spot on an electrode in the arc discharge is developed and analytical expressions for the spot radius and temperature as function of basic characteristics of the discharge and the electrode material are investigated. The dependence of the spot radius on the voltage drop of the discharge is consistent with the numerical simulation results. The sequence of calculation of voltage-current characteristics of DC arc plasma torch is proposed. It is shown that the Steenbeck model of arc discharge in cylindrical channel makes it possible to carry out this calculation. The obtained results of the calculation are compared to the experimental ones and other theoretical models.
Keywords :
arcs (electric); corrosion protection; heat transfer; numerical analysis; plasma arc spraying; plasma torches; plasma transport processes; surface treatment; wear resistant coatings; DC arc plasma torch current-voltage characteristics; Steenbeck model; analytical calculation; arc discharge; cathode spot parameters; coating quality; corrosion protection; cylindrical channel; direct current arc plasma torches; discharge voltage drop; electrode material; erosion protection; heat transfer; material coating; numerical simulation; plasma spraying; plasma torch parameters; spot radius; surface treatment; voltage-current characteristics; wear protection; working voltage; Arc discharges; Cathodes; Coatings; Discharges (electric); Materials; Plasmas;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Plasma Science (ICOPS), 2013 Abstracts IEEE International Conference on
Conference_Location :
San Francisco, CA
ISSN :
0730-9244
Type :
conf
DOI :
10.1109/PLASMA.2013.6633286
Filename :
6633286
Link To Document :
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