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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
ESCI SJR: 0.176 SNIP: 0.48 CiteScore™: 1.3

ISSN Druckformat: 1093-3611
ISSN Online: 1940-4360

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.v9.i1.80
pages 87-101

OPTICAL DIAGNOSTICS TO CONTROL ON LINE MELTING OF SILICON MATERIAL TREATED BY THERMAL PLASMA PROCESS. NEW IMPROVEMENTS FACED WITH SEVERE CONDITIONS.

S. Darwiche
Laboratoire de Genie des Procedes Plasmas et Traitement de Surface - Université Pierre et Mane Curie- ENSCP 11-13, rue Pierre et Marie Curie 75231 Paris Cedex 05 France
M. Benmansour
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
E. Francke
Laboratoire de Génie Procédés Plasmas et Traitement de Surface, Université Pierre et Mane Curie- ENSCP 11-13, rue Pierre et Marie Curie 75231 Paris Cedex 05 France
Daniel Morvan
Laboratoire de Genie des Precedes Plasmas Universite P. et M. Curie, ENSCP 11 rue P. et M. Curie 75005 Paris France
Sergey V. Dresvin
Laboratory of Electrotechnological and Plasma Installation of Polytechnic Institute -SPb State Polytechnical University, 29 Polytechnicheskaya Str., 195251 Saint-Petersburg, Russia
Jacques Amouroux
Laboratoire de Genie des Precedes Plasmas Universite P. et M. Curie, ENSCP 11 rue P. et M. Curie 75005 Paris France
Amaury Poidatz
A/S- Dantec Dynamics Measurement Technology. Nozay 91 620 France

ABSTRAKT

This experimental study is devoted to the characterization of the RF thermal plasma with an axial injection of silicon particles. We follow experimentally on line silicon powder, to evaluate the main parameters governing the behaviour of this metallurgical grade silicon particles injected axially in the torch. Significant improvements in hardware and soft ware of LDG equipment allowed now real characterizations of the particle trajectory, among other in the zone where hardest physical conditions are facing because of the high temperature of the plasma gas at atmospheric pressure ( 3000K - 9000K). We performed those measurements by Laser Doppler method in order to qualify the velocity and the grains size during their trajectory in the plasma torch. The goal is to qualify the mass transfer to the thermal trajectory and to fit model simulation and experimental results.


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