Soviet Powder Metallurgy and Metal Ceramics

, Volume 24, Issue 1, pp 43–45 | Cite as

Porous pseudoalloy electrode gap inserts

  • A. V. Pustogarov
  • G. N. Mel'nikov
  • L. I. Chernyshev
  • A. G. Kostornov
Powder Metallurgical Materials, Parts, and Coatings
  • 10 Downloads

Conclusions

The high thermal conductivity of the pseudoalloys compared with the pure refractory metals results, at the same porosity and with the same thermal fluxes, in a much lower internal EGI wall temperature. Porous EGIs made of W-Cu and Mo-Cu pseudoalloys are characterized by the same operating performance, as determined by the “sweating out” of copper. This enables their tungsten component to be replaced with the more readily available molybdenum. Chromizing stabilizes the hydraulic characteristics of porous W-Cu pseudoalloy EGIs operating with working gases containing up to 0.3 vol.% of oxygen and prolongs their useful life.

Keywords

Oxygen Copper Porosity Thermal Conductivity Tungsten 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Literature cited

  1. 1.
    A. B. Karabut, Yu. V. Kurochkin, G. N. Mel'nikov, and A. V. Pustogarov, “Devices with discharge stabilization ensured by induction through a porous wall,” Teplofiz. Vys. Temp.,12, No. 3, 618–625 (1979).Google Scholar
  2. 2.
    G. N. Mel'nikov, A. V. Pustogarov, V. V. Skorokhod, and S. M. Solonin, “Electrode gap inserts made of porous refractory metals for plasma devices,” Poroshk. Metall., No. 5, 56–60 (1980).Google Scholar
  3. 3.
    V. V. Skorokhod, S. M. Solonin, and L. I. Chernyshev, “High-porosity tungsten-copper materials produced by liquid-phase sintering,” Poroshk. Metall., No. 10, 89–92 (1978).Google Scholar
  4. 4.
    S. M. Solonin and I. N. Balitskii, “Chromizing of porous tungsten and tungsten-copper pseudoalloy materials,” Poroshk. Metall., No. 8, 39–42 (1979).Google Scholar

Copyright information

© Plenum Publishing Corporation 1985

Authors and Affiliations

  • A. V. Pustogarov
    • 1
  • G. N. Mel'nikov
    • 1
  • L. I. Chernyshev
    • 1
  • A. G. Kostornov
    • 1
  1. 1.Institute of Materials ScienceAcademy of Sciences of the Ukrainian SSRUkraine

Personalised recommendations