Effect of precursor fraction on silicide nanopowder growth under thermal plasma conditions: A computational study

Masaya Shigeta, Takayuki Watanabe

Research output: Contribution to journalArticlepeer-review

Abstract

Computational study is carried out to clarify the growth mechanisms and the effects of the silicon fraction in precursor on the fabricated nanopowders for metal-silicon binary systems (Co-Si, Mo-Si, and Ti-Si systems) under a thermal plasma condition, using a model that can simulate the collective and simultaneous combined processes of binary homogeneous nucleation, binary heterogeneous co-condensation, and coagulation among nanoparticles with different compositions as well as solidification temperature depression. Those three systems that have different ratios of the materials' saturation pressures show different growth behaviors and mature states of the nanopowders. Furthermore, parametric studies indicate that the majority of the fabricated nanoparticles have the silicon content identical to the initial precursor's silicon fraction. Because the solidification temperature depends on the silicon content in the material, the yield and size of the nanopowder are also affected indirectly by the precursor's silicon fraction.

Original languageEnglish
Pages (from-to)191-201
Number of pages11
JournalPowder Technology
Volume288
DOIs
Publication statusPublished - 2016 Jan 1
Externally publishedYes

Keywords

  • Co-condensation
  • Modeling
  • Nanopowder
  • Silicide
  • Thermal plasma

ASJC Scopus subject areas

  • Chemical Engineering(all)

Fingerprint Dive into the research topics of 'Effect of precursor fraction on silicide nanopowder growth under thermal plasma conditions: A computational study'. Together they form a unique fingerprint.

Cite this