Characterization of in-flight processing of alumina powder using a DC-RF hybrid plasma flow system at constant low operating power

H. Nishiyama, M. Onodera, J. Igawa, T. Nakajima

Research output: Contribution to journalReview articlepeer-review

8 Citations (Scopus)

Abstract

The aim of this study is to provide the optimum operating conditions for enhancing in-flight alumina particle heating as much as possible for particle spheroidization and aggregation of melted particles using a DC-RF hybrid plasma flow system even at constant low operating power based on the thermofluid considerations. It is clarified that the swirl flow and higher operating pressure enhance the particle melting and aggregation of melted particles coupled with increasing gas temperature downstream of a plasma uniformly in the radial direction at constant electrical discharge conditions.

Original languageEnglish
Pages (from-to)593-599
Number of pages7
JournalJournal of Thermal Spray Technology
Volume18
Issue number4
DOIs
Publication statusPublished - 2009 Dec

Keywords

  • Alumina powder processing
  • Complex interaction
  • DC-RF hybrid thermal plasma
  • Flow control
  • Particle size distribution
  • Process control

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Materials Chemistry

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