Fabrication of Ta-Hf-C-based Ultra High Temperature Composites via a

Award Information
Agency:
Department of Defense
Branch:
Missile Defense Agency
Amount:
$99,979.00
Award Year:
2010
Program:
STTR
Phase:
Phase I
Contract:
HQ0006-10-C-7394
Agency Tracking Number:
B09B-002-0004
Solicitation Year:
2009
Solicitation Topic Code:
MDA09-T002
Solicitation Number:
2009.B
Small Business Information
UES, Inc.
4401 Dayton-Xenia Road, Dayton, OH, 45432
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
Y
Duns:
074689217
Principal Investigator
 HeeDong Lee
 Research Scientist
 (937) 426-6900
 hdlee@ues.com
Business Contact
 Bryce Skinn
Title: Business Relations Manager
Phone: (937) 426-6900
Email: bskinn@ues.com
Research Institution
 University of Aabama
 Gregory B Thompson
 Dept. of Met. & Mat. Eng.
Tuscaloosa, AL, 35487
 (205) 348-1589
 Nonprofit college or university
Abstract
This Phase I STTR program seeks a new fabrication method to produce stronger (>100 kpsi) and tougher (>10 MPa m1/2) ultra high temperature Ta-Hf-C-based composites (UHTC) with an outstanding oxidation resistance for use as thermal protection systems for hypersonic applications, as well as for advanced rocket nozzle throat components. UES will apply a novel "Top Down" approach to control the microstructures of the composites. This approach will produce a very unique grain structure that can offer high strength, high fracture toughness, and high oxidation resistance. Hot-pressing will be used as a means for densification during the Phase I feasibility study. In the Phase II work, a sinter/HIP process will be explored for near-net shape fabrication. During the Phase I program, UES will collaborate with the University of Alabama to evaluate oxidation mechanisms and to conduct microstructural characterization. UES will process the powders and will also evaluate the mechanical properties.

* information listed above is at the time of submission.

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