ARTICLE:

• A NUMERICAL INVESTIGATION OF SIC NANOPOWDER SYNTHESIS REACTOR BY LASER PYROLYSIS  download article

M. Amara
School of Mechanical and Manufacturing Engineering, The University of New South Wales, Sydney, NSW 2052, Australia; and SPCTS Laboratory, University of Limoges, 123 av. A. Thomas, 87060, Limoges cedex, France

Mohammed El Ganaoui
SPCTS, CNRS U. M.R. 6638. Université de Limoges, 123 Av. Albert Thomas, 87060 Limoges, France

ABSTRACT

A numerical model of the synthesis of silicon carbide nanopowder by laser pyrolysis was developed. This model is implemented into the industrial CFD package ANSYS-CFX. We compared two sources reactive gas: SiH₄/CH₄ and SiH₄/C₂H₄. The results show two behaviours of the temperature in the reactor. In addition, the kinetics of SiH₄ decomposition and hydrocarbon reactions induce the delayed of the carbon formation compare of the silicon formation. As a result, we suspect that the mechanism of SiC formation passes through two-steps: formation of silicon particles and their carburization. These results agree with experimental investigations available in the literature.

 download article

EQP-14 pages

« Previous article         Next article »