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

2005, Volume9

Issue 1

162 pages

DOI: 10.1615/HighTempMatProc.v9.i1

Issue price - $144.00

Jacques Amouroux
Laboratoire de Génie des Procédés Plasmas et Traitement de Surface − Université Pierre et Marie Curie − Paris 6 - ENSCP, 11, rue Pierre et Marie Curie, 75231 Paris Cedex 05, France

Sergey Dresvin
Laboratory of Electrotechnological and Plasma Installation of Polytechnic Institute -SPb State Polytechnical University, 29 Polytechnicheskaya Str., 195251 Saint-Petersburg, Russia

D. Ivanov
St. Petersburg State Polytechnic University, 29 Politekhnicheskaya Str., St. Petersburg, 195251, Russia

The influence of chemical reactions on the interactions between a plasma jet and small particles (ds < 500 μm) has been investigated.
The rate of particle temperature increase has been found based on the energy balance between the plasma and particles. Usually the following losses of energy are considered: a) radiation, b) melting, c) heating of vapor cloud, d) vaporization. However the chemical reactions can result in large correction in the balance of energy between the particles and plasma. Exothermic reactions are a new source of energy while endothermic ones result in an energy loss.
The chemical reactions for particles at high temperature (when intensive evaporation takes place) occur in the boundary layer surrounding particles ; for particles with temperature close or below melting temperature - at the surface of particles.
Addition of exothermic reaction energy to the particle energy balance is also strongly dependent on the gas flow rate controlling the amount of reactive gas in the boundary layer.
This work presents the analysis of the influence of energy of chemical reactions on the energy balance in plasma-particle system.

DOI: 10.1615/HighTempMatProc.v9.i1.60 Download article, 55-70 pages

Article price - $35.00

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