Effect of saturation pressure difference on metal-silicide nanopowder formation in thermal plasma fabrication

Masaya Shigeta, Takayuki Watanabe

研究成果: Article査読

17 被引用数 (Scopus)

抄録

A computational investigation using a unique model and a solution algorithm was conducted, changing only the saturation pressure of one material artificially during nanopowder formation in thermal plasma fabrication, to highlight the effects of the saturation pressure difference between a metal and silicon. The model can not only express any profile of particle size-composition distribution for a metal-silicide nanopowder even with widely ranging sizes from sub-nanometers to a few hundred nanometers, but it can also simulate the entire growth process involving binary homogeneous nucleation, binary heterogeneous co-condensation, and coagulation among nanoparticles with different compositions. Greater differences in saturation pressures cause a greater time lag for co-condensation of two material vapors during the collective growth of the metal-silicide nanopowder. The greater time lag for co-condensation results in a wider range of composition of the mature nanopowder.

本文言語English
論文番号43
ジャーナルNanomaterials
6
3
DOI
出版ステータスPublished - 2016 3 7
外部発表はい

ASJC Scopus subject areas

  • 化学工学(全般)
  • 材料科学(全般)

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