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Powder Metallurgy and Metal Ceramics

, Volume 51, Issue 3–4, pp 137–141 | Cite as

Analyzing the quality of grinding and mixing of copper and chromium powders in a new-type mill

  • O. V. Khomenko
  • Yu. I. Naida
  • R. V. Minakova
Article

The potential use of a new-type mill developed at the Frantsevich Institute for Problems of Materials Science to produce copper and chromium powder mixtures intended for the manufacture of electrical-grade materials is studied. The mill ensures mechanical grinding of loose materials by mechanisms similar to those acting in vortex and jet mills. The greater powder refinement in this mill is due to the sliding interaction of particles with abrasive surfaces of the mill chamber. It is shown that common grinding of electrolytic copper and reduced or aluminothermic chromium for 10–30 min in argon promotes variation in the shape of particles, facilitates their mixing, and provides uniform distribution of components in the mixture.

Keywords

copper chromium grinding shape of powder particles quality of mixing 

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Copyright information

© Springer Science+Business Media, Inc. 2012

Authors and Affiliations

  • O. V. Khomenko
    • 1
  • Yu. I. Naida
    • 1
  • R. V. Minakova
    • 1
  1. 1.Frantsevich Institute for Problems of Materials ScienceNational Academy of Sciences of UkraineKievUkraine

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