Nanotechnology Conference and Trade Show - Nanotech 2006
> Program > Technical Conferences > Business & Development > Nano Impact Workshop > Nanotech Job Fair > Expo
Program
Sessions
Sunday
Monday
Tuesday
Wednesday
Thursday
Index of Authors
Index of Keywords
Confirmed Speakers
Conferences & Symposia

Conference Proceedings

Conference Technical Proceedings

Nanopowder net-shaping for manufacturing nanostructured ceramics

O.L. Khasanov, E.S. Dvilis, V.M. Sokolov, Yu. Pokholkov and G. Loutts
Tomsk Polytechnic University, RU

Keywords:
nanopowder, dry pressing, ultrasonic vibrations, net-shaping

Abstract:
The work aim is development of methods of dry nanopowder uniform compacting into complex shapes for sintering nanostructured ceramics and composites. In processing of bulk nanoceramic articles, it is important to compact nanopowder into a required shape having uniform density without gradients of internal stresses and to prevent grain growth, warping, distortions during sintering.
The new techniques of dry nanopowder compacting were developed. The first technique is based on the powerful ultrasonic vibration (PUV) application to a special die (acoustic waveguide filled by nanopowder) simultaneously with uniaxial compaction pressure in quasi-resonance conditions when the PUV amplitude is proportional or equal to multiples of the particle or agglomerate mean size. Application of PUV during nanopowder compacting reduces the pressure gradients, hinder grain growth and preserve nanostructure during sintering.
The collector technique involves specially designed molds, where active and passive shaping surfaces are combined in one shaping member of the mold according to the principle of minimizing die-wall friction forces and specific rules of collective motion of the shaping members. These techniques were used for shaping (Ba,W)TiO3 nanopowder in manufacturing nanoceramic cases for microwave duplexers which nad dimensional tolerance of ±5 microns after sintering.

Back to Program

Sessions Sunday Monday Tuesday Wednesday Thursday Authors

Nanotech 2006 Conference Program Abstract

 
Nanotechnology Conference | Terms of use | Privacy policy | Contact | NSTI Home
Program | Technical Conferences | Business & Development | Nano Impact Workshop | Nanotech Job Fair | Expo |
Nanotech 2006 Home | Press Room | Venue | Subscribe | Site Map
Names, and logos of other organizations are the property of those organizations and not of NSTI.
This event is not open to the general public and NSTI reserves the right to refuse admission and participation to any individual.