Author(s)

O. Chazot & Y. Du Terrail Couvat

Abstract

Prediction of fusion and vaporisation zones along a particle flow in an inductive plasma reactor with a 1-D heat transfer simulation O. Chazot, Y. Du Terrail Couvat EPM-Madylam, ENSHMG, BP 95, 38402 St Martin d'Heres cedex, France ABSTRACT Heat treatment of titanium powders by an inductive radio frequency plasma reactor is simulated. "Key parameters" of the process are exposed, bring out of literature data and experimental investigations to give basis conditions for the 1- D model used on spherical geometry, with classical boundary conditions, and more complex terms including phases changes. Simulation is very close to real condition taking into account the heat and mass transfer, considering the cloud of volatilization surrounding the particle. The radial heat transfer between the plasma and the particle flow has been checked. Moreover it gives fusion and vaporisation zones within the reactor, and thermal-history on several particle paths. INTRODUCTION

Keywords