Net shaping nanopowders with powerful ultrasonic action and methods of density distribution control

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Abstract

Two methods of compacting dry poly- and nanodisperse powders into compacts of a complicated shape with uniform density distribution in the volume have been developed: pressing under powerful ultrasonic action and collector pressing by the control of friction forces redistribution. Experimental measuring and simulation of the process of deformation of a powder body by different methods show that in the case of ultrasonic pressing, the dispersion of the density distribution has decreased by 20%, and the relative differential of density along the pressing height has decreased by 35% as compared to the case of the conventional uniaxial pressing. Collector pressing allows reducing the dispersion of the density distribution (has decreased by a factor of 10), while the relative density differential along the green compact height has decreased by 60%.

Original languageEnglish
Pages (from-to)135-141
Number of pages7
JournalAdvances in Applied Ceramics
Volume107
Issue number3
DOIs
Publication statusPublished - Jun 2008

Keywords

  • Collector pressing
  • Nanopowders
  • Powder compaction
  • Ultrasonic pressing
  • Uniform density distribution

ASJC Scopus subject areas

  • Ceramics and Composites

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