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Composite Si/C/N powder production by laser induced gas phase reactions

Published online by Cambridge University Press:  31 January 2011

E. Borsella ,
S. Botti ,
R. Fantoni ,
R. Alexandrescu ,
I. Morjan ,
C. Popescu ,
T. Dikonimos-Makris ,
R. Giorgi  and
S. Enzo
E. Borsella
Affiliation:
ENEA, Area INN, Dip. Sviluppo Tecnologie di Punta, C. R. E. Frascati, P. O. Box 65-00044 Frascati, Rome, Italy
S. Botti
Affiliation:
ENEA, Area INN, Dip. Sviluppo Tecnologie di Punta, C. R. E. Frascati, P. O. Box 65-00044 Frascati, Rome, Italy
R. Fantoni
Affiliation:
ENEA, Area INN, Dip. Sviluppo Tecnologie di Punta, C. R. E. Frascati, P. O. Box 65-00044 Frascati, Rome, Italy
R. Alexandrescu*
Affiliation:
ENEA, Area INN, Dip. Sviluppo Tecnologie di Punta, C. R. E. Frascati, P. O. Box 65-00044 Frascati, Rome, Italy
I. Morjan*
Affiliation:
ENEA, Area INN, Dip. Sviluppo Tecnologie di Punta, C. R. E. Frascati, P. O. Box 65-00044 Frascati, Rome, Italy
C. Popescu
Affiliation:
Research Centre for Quality and Environmental Protection Siret Str. 95, Bucharest, Romania
T. Dikonimos-Makris
Affiliation:
ENEA, Area INN, Dip. Proc. Chim., Mat. non Met. e Relat. Trat., C.R.E. Casaccia, Rome, Italy
R. Giorgi
Affiliation:
ENEA, Area INN, Dip. Proc. Chim., Mat. non Met. e Relat. Trat., C.R.E. Casaccia, Rome, Italy
S. Enzo
Affiliation:
Dip. Chimica Fisica, University of Venice, Italy
*
a)Permanent address: Institute of Atomic Physics, Laser Department, Bucharest, Romania.
a)Permanent address: Institute of Atomic Physics, Laser Department, Bucharest, Romania.
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Abstract

Ultrafine amorphous Si/C/N ternary powders have been prepared in a CO2 laser assisted process. We demonstrate the possibility to drive the C/N ratio in the powder by properly choosing the experimental conditions and the gaseous reactant ratio in the initial mixture containing silane, dimethylamine, and ammonia. A kinetic model that accounts for reaching the equilibrium between the gaseous reaction intermediates and the solid products is proposed.

Type
Articles
Information
Journal of Materials Research , Volume 7 , Issue 8 , August 1992 , pp. 2257 - 2268
Copyright
Copyright © Materials Research Society 1992

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