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W-C Synthesis in a Pulsed Arc Submerged in Liquid

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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 WC1−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.

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Acknowledgements

The authors gratefully acknowledge collaboration with Metal-Tech Ltd.

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Authors and Affiliations

  1. Electrical Discharge and Plasma Laboratory, Tel Aviv University, P.O. Box 39040, Tel Aviv, 69978, Israel

    N. Parkansky, L. Glikman, I. I. Beilis, B. Alterkop & R. L. Boxman

  2. The Wolfson Applied Materials Research Center, Tel Aviv University, P.O. Box 39040, Tel Aviv, 69978, Israel

    Yu. Rosenberg & Z. Barkay

Authors
  1. N. Parkansky
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  2. L. Glikman
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  3. I. I. Beilis
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  4. B. Alterkop
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  5. R. L. Boxman
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  6. Yu. Rosenberg
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  7. Z. Barkay
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Correspondence to N. Parkansky.

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Parkansky, N., Glikman, L., Beilis, I.I. et al. W-C Synthesis in a Pulsed Arc Submerged in Liquid. Plasma Chem Plasma Process 28, 365–375 (2008). https://doi.org/10.1007/s11090-008-9130-6

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  • DOI: https://doi.org/10.1007/s11090-008-9130-6

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