Fine Grained Tungsten Claddings for Cermet Based NTP Systems

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$125,000.00
Award Year:
2013
Program:
SBIR
Phase:
Phase I
Contract:
NNX13CM07P
Award Id:
n/a
Agency Tracking Number:
125218
Solicitation Year:
2012
Solicitation Topic Code:
H2.02
Solicitation Number:
n/a
Small Business Information
AL, Huntsville, AL, 35811-1558
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
799114574
Principal Investigator:
Scott O'Dell
Senior Materials Engineer
(256) 851-7653
scottodell@plasmapros.com
Business Contact:
Timothy McKechnie
President
(256) 851-7653
timmck@plasmapros.com
Research Institution:
Stub




Abstract
In October 2011, NASA initiated the Nuclear Cryogenic Propulsion Stage (NCPS) program to evaluate the feasibility and affordability of Nuclear Thermal Propulsion (NTP). A critical aspect of the program is to develop a robust, stable nuclear fuel. One of the nuclear fuel configurations currently being evaluated is a cermet-based material comprised of uranium dioxide particles encased in a tungsten matrix. To prevent excessive fuel loss from reaction with the hot hydrogen gas passing through the cooling channels, both the internal surfaces of the cooling channels and the exterior of the fuel element must be clad with a hydrogen compatible material such as tungsten. To reduce the potential for uranium hydride formation that can lead to grain boundary separation and cracking, the diffusion of hydrogen into the cermet must be minimized. Therefore, fine-grained tungsten claddings are needed. Recently, advanced electrochemical processing techniques (EL-Form?) have been developed that enable the tailoring of refractory metal microstructures through process parameter manipulation and/or alloy additions. Therefore, these innovative electrochemical forming techniques will be used to produce fine-grained, hermetic tungsten claddings for both the internal and external surfaces of cermet based nuclear fuel elements.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government