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Erosion of needle electrodes in pulsed corona discharge in water

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Czechoslovak Journal of Physics Aims and scope

Abstract

Erosion of needle electrodes in the pulsed corona discharge in water with a pulse energy of ∼ 2÷; 3 J was investigated in dependence on the electrode material (platinum, tungsten and stainless-steel) and the solution conductivity (100 and 500 µS/cm). Erosion of electrodes remarkable increased with the higher solution conductivity for all three tested metals. The highest erosion rates were determined for tungsten while platinum was the least eroded material. In addition to the dominant melting effect, release of anode material by the electrolysis significantly contributed to the total erosion of needle electrodes. The highest contribution of electrolysis was determined for stainless-steel electrodes that released up to 40–50% of eroded metal in the form of iron ions. Peculiar protrusions were observed on the surface of eroded tungsten electrodes.

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Authors and Affiliations

  1. Institute of Plasma Physics, Academy of Sciences of the Czech Republic, Za Slovankou 3, Prague 8, 182 00, Czech Republic

    P. Lukeš, M. Člupek, V. Babický & P. Šunka

  2. Faculty of Mathematics, Physics and Informatics, Comenius University, Mlynská dolina F-2, Bratislava, 842 15, Slovakia

    J. D. Skalný & M. Štefečka

  3. Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, Prague 8, 182 00, Czech Republic

    J. Novák & Z. Málková

Authors
  1. P. Lukeš
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  2. M. Člupek
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  3. V. Babický
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  4. P. Šunka
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  5. J. D. Skalný
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  6. M. Štefečka
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  7. J. Novák
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  8. Z. Málková
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Lukeš, P., Člupek, M., Babický, V. et al. Erosion of needle electrodes in pulsed corona discharge in water. Czech J Phys 56 (Suppl 2), B916–B924 (2006). https://doi.org/10.1007/s10582-006-0304-2

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  • DOI: https://doi.org/10.1007/s10582-006-0304-2

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