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Erosion Characteristics of Copper-Based Composite Electrodes in an Electric Arc of Variable Length with Transverse Gas Blowing

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Abstract

We present experimental data on the erosion of electrodes made of copper-based pseudoalloys during contact breaking at current amplitudes up to 150 kA in nitrogen at a pressure of ~2 MPa with transverse gas blowing. The electric-erosion characteristics of copper–iron pseudoalloy CuFe (85/15%) electrodes obtained by laser layer melting, as well as CuFe (70/30%) and CuW (25/75%) pseudoalloy electrodes fabricated by traditional powder technology (sintering of pressed powder compacts) are reported. The specific erosion of electrodes in variable-length arc amounts to ~1 mg/C, which somewhat exceeds the value observed for a fixed-length arc discharge gap.

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Authors and Affiliations

  1. Institute for Electrophysics and Electric Power, Russian Academy of Sciences, St. Petersburg, 191186, Russia

    A. V. Budin, M. E. Pinchuk & N. K. Kurakina

  2. UniLabs Research and Production Corporation, St. Petersburg, 191180, Russia

    M. E. Pinchuk & N. K. Kurakina

Authors
  1. A. V. Budin
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  2. M. E. Pinchuk
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  3. N. K. Kurakina
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Corresponding author

Correspondence to M. E. Pinchuk.

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Original Russian Text © A.V. Budin, M.E. Pinchuk, N.K. Kurakina, 2018, published in Pis’ma v Zhurnal Tekhnicheskoi Fiziki, 2018, Vol. 44, No. 18, pp. 3–9.

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Budin, A.V., Pinchuk, M.E. & Kurakina, N.K. Erosion Characteristics of Copper-Based Composite Electrodes in an Electric Arc of Variable Length with Transverse Gas Blowing. Tech. Phys. Lett. 44, 808–810 (2018). https://doi.org/10.1134/S1063785018090171

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