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High Temperature Material Processes (An International Quarterly of High-Technology Plasma Processes)

An International Journal

ISSN for PRINT: 1093-3611

Institutional price:	$604.00
Issues per year:	4

Best Paper Award Selection - Editorial Board Site

2005, Volume9

162 pages

DOI: 10.1615/HighTempMatProc.v9.i1

Issue price - $144.00

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, France.

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 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

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

Amaury Poidatz
A/S- Dantec Dynamics Measurement Technology. Nozay 91 620 France

ABSTRACT

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.