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.
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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).
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).
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).
S. M. Solonin and I. N. Balitskii, “Chromizing of porous tungsten and tungsten-copper pseudoalloy materials,” Poroshk. Metall., No. 8, 39–42 (1979).
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Translated from Poroshkovaya Metallurgiya, No. 1(265), pp. 48–51, January, 1985.
In conclusion, the authors wish to thank S. M. Solonin for his continual interest in this work.
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Pustogarov, A.V., Mel'nikov, G.N., Chernyshev, L.I. et al. Porous pseudoalloy electrode gap inserts. Powder Metall Met Ceram 24, 43–45 (1985). https://doi.org/10.1007/BF00792209
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DOI: https://doi.org/10.1007/BF00792209