W-C synthesis in a pulsed arc submerged in liquid

N. Parkansky, L. Glikman, I. I. Beilis, B. Alterkop, R. L. Boxman, Yu Rosenberg, Z. Barkay

Research output: Contribution to journalArticlepeer-review

Abstract

Pulsed arc production of tungsten carbide (W-C) powders in deionized water and analytical (99.8%) ethanol was studied. The arc was ignited between two submerged electrodes: one of 99.99% graphite (C) and the other of 99.5% W. The pulse energy and duration were in the ranges of 7.7-192 mJ and 25-65 μs, respectively. The WC 1-x production rate was maximized by configuring the C electrode as the anode and the W electrode as the cathode. The rate was greater in ethanol than in water. The rate of producing ∼ 10 nm particles in ethanol was two orders of magnitude greater when using W anode -C cathode configuration, than with the opposite polarity.

Original languageEnglish
Pages (from-to)365-375
Number of pages11
JournalPlasma Chemistry and Plasma Processing
Volume28
Issue number3
DOIs
StatePublished - Jun 2008

Keywords

  • Electrode erosion
  • Liquid
  • Pulsed arc
  • Submerged
  • W-C powders production

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