图书馆订阅: Guest
Begell Digital Portal Begell 数字图书馆 电子图书 期刊 参考文献及会议录 研究收集
高温材料处理:国际期刊
ESCI 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.v15.i2.30
pages 105-113

COMPARATIVE STUDY BETWEEN KINETIC AND THERMODYNAMIC CALCULATION OF COMPOSITION IN SF6 PLASMAS

V. Rat
PCTS -CNRS UMR 6638, University of Limoges, 123 av. A. Thomas, 87060 Limoges cedex, France
P. Andre
Laboratoire Arc Electrique et Plasmas Thermiques CNRS FRE 3120, Phys. Bât. 5 - Université Blaise Pascal, Aubière Cedex, France; and P.R.E.S. Clermont Université, Clermont-Ferrand Cedex 1, France
Jacque Aubreton
SPCTS University of Limoges, 123 av. A. Thomas, 87060 Limoges cedex, France
M. F. Elchinger
SPCTS University of Limoges, 123 av. A. Thomas, 87060 Limoges cedex, France
Pierre Fauchais
Laboratoire Sciences des Procedes Ceramiques et de Traitements de Surface UMR CNRS 6638 University of Limoges 123 avenue Albert Thomas, 87060 LIMOGES - France
A. Lefort
Laboratoire Arc Electrique et Plasmas Thermiques, Université Blaise Pascal, CNRS UMR 6069, 24 avenue des Landais, F63177 Aubiére Cedex, France

ABSTRACT

In this paper we compare the compositions calculated in chemical equilibrium for an SF6 plasma at atmospheric pressure, in the multi-temperature model and using kinetics (33 reactions involving 18 species). The ratio of the electron temperature Te to that of heavy species Th was calculated as a function of electron density and an intermediate temperature T* between Te and Th was introduced to cope with the relationship kf (T*)/kr(T*) = KX(T*) where kf and kr are the reaction rate coefficients (forward and reverse) and KX the equilibrium constant. The main difference between equilibrium and kinetic calculations lies in the densities of S+, S2+, SF+, F and S species between 2,000 and 6,000 K. The multi-temperature method gives results very different from those of the kinetic calculations even when the charge loss reactions are neglected. This is in contrast to what happens with H2 or N2.


Articles with similar content:

COMPARATIVE STUDY BETWEEN KINETIC AND THERMODYNAMIC CALCULATION OF COMPOSITION IN SF6 PLASMAS
Progress in Plasma Processing of Materials, 2001, Vol.0, 2001, issue
A. Lefort, M. F. Elchinger, Jacque Aubreton, Pierre Fauchais, V. Rat, P. Andre
TWO-TEMPERATURE PLASMA COMPOSITION IN SF6 PLASMA : A KINETIC MODEL
Progress in Plasma Processing of Materials, 1999, Vol.1, 1999, issue
J. B. Belhaouari, Alain Gleizes, J. J. Gonzalez, R. Girard
NOVEL METHODS OF MANUFACTURING SOLID OXIDE FUEL CELL ELECTRODES
HYSYDAYS
1st World Congress of Young Scientists on Hydrogen Energy Systems, Vol.0, 2005, issue
Neil Shearer, Alan Davidson
INFLUENCE OF COPPER VAPOR ON TRANSPORT PROPERTIES OF AIR PLASMA AT EQUILIBRIUM AND IN A MULTITEMPERATURE MODEL
Progress in Plasma Processing of Materials, 1999, Vol.1, 1999, issue
S. Combadiere, M. F. Elchinger, Jacque Aubreton, Pierre Fauchais
THERMODYNAMIC AND TRANSPORT PROPERTIES OF H-S GASES INCLUDING SULPHUR DIHYDRIDE: H2S.
Progress in Plasma Processing of Materials, 1997, Vol.1, 1997, issue
Guy Delluc, M. F. Elchinger, Bernard Pateyron, Pierre Fauchais