ultrasound pressing of nanopowders (rus. ультразвуковое прессование нанопорошков) — the method of dry cold compaction of ceramic nanopowders without using plasticizer.

Description

Exposure of powder to high-intensity ultrasound during pressing reduces interparticle friction and the friction of the powder particles on the walls of the mould and partially destroys agglomerates and larger particles, and raises the surface activity of the powder particles and makes the distribution in the volume more uniform. This increases the density of the compacted product, accelerates the diffusion processes, limits grain growth during subsequent sintering, and preserves the nanostructure. Ultrasonic nanopowder pressing is particularly efficient for fabricating complex-shape articles.

Author

  • Gusev Alexander I.

Sources

  1. Gusev A. I. Nanomaterials, Nanostructures, and Nanotechnologies (in Russian) // Fizmatlit, Moscow (2007) - 416 pp.
  2. Gusev A. I., Rempel A. A. Nanocrystalline Materials. — Cambridge: Cambridge International Science Publishing, 2004. — 351 p.

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