Dynamic Powder Consolidation for Full Density and Nano Grain Preservation

Award Information
Agency:
Department of Defense
Branch
n/a
Amount:
$99,977.00
Award Year:
2012
Program:
SBIR
Phase:
Phase I
Contract:
W15QKN-12-C-0022
Award Id:
n/a
Agency Tracking Number:
A112-088-0765
Solicitation Year:
2011
Solicitation Topic Code:
A11-088
Solicitation Number:
2011.2
Small Business Information
2763 Culver Avenue, Dayton, OH, -
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
053184776
Principal Investigator:
Bhanumathi Chelluri
Sr. Research Scientist
(937) 296-1806
bhanu.chelluri@iap.com
Business Contact:
John Barber
President
(937) 296-1806
john.barber@iap.com
Research Institution:
Stub




Abstract
Transparent polycrystalline ceramic nanomaterials benefit a host of military applications including as laser materials, transparent armor, and high strength windows. While current nanopowder processing techniques produce large quantities of quality ceramic nanopowders, they yield parts with sub-micron to micron grain sizes when manufactured by conventional press, sinter, and HIP methods or through hot pressing. Nevertheless, these parts still show promise for higher strength and optical performance compared to those produced from micron-sized starting powders. In order to reap the full property enhancement potential of nanopowders, the final sintered part must retain its nanograin structure (<100 nm). The proposed project will develop a dynamic, high-density (>70 %) green body compaction technique for ceramic nanopowders. Such compacts will enable sintering at lower temperature and for shorter times to reach full density, thereby preserving the desirable nanograin size in the final part. We anticipate such a process development will yield nanostructured bulk ceramics with mechanical and optical performance enhancements that lie well beyond those currently achievable at an affordable cost.

* information listed above is at the time of submission.

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