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高温材料处理:国际期刊
SJR: 0.176 SNIP: 0.48 CiteScore™: 1.3

ISSN 打印: 1093-3611
ISSN 在线: 1940-4360

高温材料处理:国际期刊

DOI: 10.1615/HighTempMatProc.v5.i1.70
6 pages

CALCULATION OF RF PLASMA TORCH PARAMETERS BY MEANS OF NON-EQUILIBRJUM MODEL OF AR PLASMA

Sergey V. Dresvin
Laboratory of Electrotechnological and Plasma Installation of Polytechnic Institute -SPb State Polytechnical University, 29 Polytechnicheskaya Str., 195251 Saint-Petersburg, Russia
Nguyen Kuok - Shi
Technical University, Polytechnic Str 29, 195251 Saint Petersburg, Russia
D. Ivanov
St. Petersburg State Polytechnic University, 29 Politekhnicheskaya Str., St. Petersburg, 195251, Russia
Jacques Amouroux
Laboratoire de Genie des Precedes Plasmas Universite P. et M. Curie, ENSCP 11 rue P. et M. Curie 75005 Paris France

ABSTRACT

Calculation of RF plasma torch parameters was made by means of non-equilibrium model of plasma. In this study it was calculated RF ICP plasma torch by frequency 28 MHz, power 2 − 4 kW, inner diameter of the torch 24 mm, plasma gas − argon. Plasma torch has three axial gas flows: sheath gas G1=20 l/min, plasma gas G2=2.4 l/min, transport gas G3=3.4 l/min. Calculation has been performed within the frame of the method of control volume.
The results show that the injection of transport gas in the axis plasma zone leads to a strong disturbance of a thermal equilibrium and a cooling of the axis zone.


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