Numerical analysis for preparation of silicon-based intermetallic nano-particles in induction thermal plasma flow systems

Masaya Shigeta, Takayuki Watanabe

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Numerical analysis is conducted for silicon-based intermetallic nano-particle preparation in induction thermal plasma flow systems. In the nucleation region, the temperature decreases drastically (104 - 105 K/s), which results in a great promotion of nano-particle nucleation. In Mo-Si system, nuclei of molybdenum are produced and grow in the upstream region and then silicon vapor condenses on the molybdenum particles. The composition shows wide range since condensations of molybdenum and silicon occur at the different positions. On the other hand in Ti-Si system, it shows narrow range since condensations of titanium and silicon occur simultaneously. The difference of the formation mechanisms leads to the preparation of disilicides as well as the sub-products which are estimated from the phase diagrams. The particle size distributions and the compositions obtained from the present model show good agreements with the experimental results.

Original languageEnglish
Pages (from-to)425-431
Number of pages7
JournalJSME International Journal, Series B: Fluids and Thermal Engineering
Volume48
Issue number3
DOIs
Publication statusPublished - Feb 15 2006
Externally publishedYes

Fingerprint

Plasma Gases
Plasma flow
thermal plasmas
Silicon
magnetohydrodynamic flow
Intermetallics
numerical analysis
Molybdenum
intermetallics
Numerical analysis
induction
molybdenum
preparation
silicon
Condensation
Nucleation
disilicides
condensation
nucleation
promotion

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Physical and Theoretical Chemistry
  • Fluid Flow and Transfer Processes

Cite this

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abstract = "Numerical analysis is conducted for silicon-based intermetallic nano-particle preparation in induction thermal plasma flow systems. In the nucleation region, the temperature decreases drastically (104 - 105 K/s), which results in a great promotion of nano-particle nucleation. In Mo-Si system, nuclei of molybdenum are produced and grow in the upstream region and then silicon vapor condenses on the molybdenum particles. The composition shows wide range since condensations of molybdenum and silicon occur at the different positions. On the other hand in Ti-Si system, it shows narrow range since condensations of titanium and silicon occur simultaneously. The difference of the formation mechanisms leads to the preparation of disilicides as well as the sub-products which are estimated from the phase diagrams. The particle size distributions and the compositions obtained from the present model show good agreements with the experimental results.",
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