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Soviet Powder Metallurgy and Metal Ceramics

, Volume 14, Issue 3, pp 188–192 | Cite as

Production of refractory compound granules

  • A. E. Gorbunov
  • Yu. A. Otradinskii
  • V. S. Matveeva
  • F. G. Sevost'yanova
Theory, Production Technology, and Properties of Powders and Fibers
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Conclusions

  1. 1.

    A study was made of two methods of preparation of metallic carbide and boride granules, involving: a) sintering without an inert packing material and b) passing a powdered material through the hot zone of a vertical tube resistance furnace.

     
  2. 2.

    It was established that, to obtain Cr3C2 and CrB granules of maximum apparent density, it is necessary to perform sintering in two stages, consisting of presintering at 1200°C and resintering for 20 min at a temperature as close as possible to Tm of the granule material.

     
  3. 3.

    It was also found that, to obtain refractory compound granules of spherical shape, the temperature in the hot zone of the spheroidization apparatus must be some 150–200°C higher than Tm of the refractory compound.

     

Keywords

Furnace Carbide Boride Spherical Shape Apparent Density 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Literature cited

  1. 1.
    V. I. Veprintsev and Yu. A. Otradinskii, in: Hard Alloys [in Russian], Vol. 8, Metallurgiya, Moscow (1969), p. 137.Google Scholar
  2. 2.
    V. M. Sleptsov, E. M. Prshedromirskaya, and Yu. P. Kukota, Poroshkovaya Met., No. 9 (1965).Google Scholar
  3. 3.
    G. V. Samsonov, L. Ya. Markovskii, et al., Boron and Its Compounds and Alloys [in Russian], Izd-vo AN UkrSSR, Kiev (1960).Google Scholar

Copyright information

© Plenum Publishing Corporation 1975

Authors and Affiliations

  • A. E. Gorbunov
    • 1
  • Yu. A. Otradinskii
    • 1
  • V. S. Matveeva
    • 1
  • F. G. Sevost'yanova
    • 1
  1. 1.All-Union Scientific-Research and Design Institute of Refractory Metals and Hard AlloysUSSR

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