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Thermal plasma treatment of titanium carbide powders: Part I. Numerical analysis of powder behavior in argon-hydrogen and argon-nitrogen radio frequency plasmas

Published online by Cambridge University Press:  31 January 2011

Takayuki Watanabe ,
Atsushi Kanzawa ,
Takamasa Ishigaki  and
Yusuke Moriyoshi
Takayuki Watanabe*
Affiliation:
Department of Chemical Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152, Japan
Atsushi Kanzawa
Affiliation:
Department of Chemical Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152, Japan
Takamasa Ishigaki
Affiliation:
National Institute for Research in Inorganic Materials, 1-1 Namiki, Tsukuba-shi, Ibaraki 305, Japan
Yusuke Moriyoshi
Affiliation:
National Institute for Research in Inorganic Materials, 1-1 Namiki, Tsukuba-shi, Ibaraki 305, Japan
*
a) Author to whom correspondence should be addressed.
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Abstract

Modeling of TiC powder behavior in Ar–H2 and Ar–N2 RF thermal plasmas has been performed as well as the numerical analysis of the plasma fields to investigate the plasma/powders interaction. The heat transfer rate from the plasma to the powders decreases with increasing the powder feed rate and with decreasing the plasma pressure, because of the significant local cooling owing to the presence of the injected powders. These results agree fairly well with the experimental results of our following paper. The modeling herein gives guidance for the rational design of new material processing using thermal plasmas.

Type
Articles
Information
Journal of Materials Research , Volume 11 , Issue 10 , October 1996 , pp. 2598 - 2610
Copyright
Copyright © Materials Research Society 1996

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Footnotes

b)Present address: Department of Materials Science, Hosei University, Kajino-cho, Koganei-shi, Tokyo 184, Japan.

References

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