Features of passivation, oxidation and combustion of tungsten nanopowders by air

Young Soon Kwon, Alexander A. Gromov, Alexander P. Ilyin, Alexander A. Ditts, Ji Soon Kim, Sang Ha Park, Moon Hee Hong

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

The passivation, oxidation and combustion of tungsten nanopowders (NP) (as ∼ 100 nm), produced by an electrical explosion of wires (WEE) method, has been studied in air medium. The phase transformation for W nanopowders under air-oxidation was investigated. The oxidation process and an analysis of passivated powders were studied by FESEM, EDS, XPS, XRD, TEM, DTA-TGA and size distribution analysis was also observed by a video camera. After the comprehensive testing of passivated, oxidized and burned powders, a chemical process of oxidation of W nanoparticles was suggested.

Original languageEnglish
Pages (from-to)235-241
Number of pages7
JournalInternational Journal of Refractory Metals and Hard Materials
Volume22
Issue number6
DOIs
Publication statusPublished - 1 Nov 2004

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Keywords

  • Combustion and coatings
  • Oxidation
  • Passivation
  • Tungsten nanopowder

ASJC Scopus subject areas

  • Metals and Alloys

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