Numerical investigation for nano-particle synthesis in an RF inductively coupled plasma

Masaya Shigeta, Takayuki Watanabe, Hideya Nishiyama

Research output: Contribution to journalConference article

68 Citations (Scopus)

Abstract

Since plasma is regarded as one of the multifunctional fluids which has high energy density, chemical reactivity, controllability by an external electromagnetic field and variable transport properties such as electrical conductivity, it is considerably effective for the synthesis of nano-particles. Since a radio frequency inductively coupled plasma (RF-ICP) has several advantages, the synthesis of ultrafine powders of metals and ceramics with high purity can be easily achieved by the steep temperature gradients at the tail. In the present study, it is clarified how the number density, diameter and specific surface of the produced nano metal-particles of Al, Ti, Au and Pt are influenced by the operating conditions such as the quenching gas flow rate and the powder feed rate of the RF-ICP reactor by numerical investigation. For all the metals, the increase in the quenching gas flow rate results in the increase in the particle number density, the decrease in the mean diameter and the increase in the specific surface. The increase in the powder feed rate causes the increase in the mean diameter but the decrease in the specific surface. The results of four metals are markedly different from each other due to their own material properties of saturation pressure and surface tension.

Original languageEnglish
Pages (from-to)192-200
Number of pages9
JournalThin Solid Films
Volume457
Issue number1
DOIs
Publication statusPublished - Jun 1 2004
Externally publishedYes
Event16th Symposium on Plasma Science for Materials (SPSM-16) - Tokyo, Japan
Duration: Jun 4 2003Jun 5 2003

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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