Low Cost Method for Synthesis of [100]-W Reinforced Heavy Alloys for Kinetic Energy Penetrators

Award Information
Agency:
Department of Defense
Branch
Army
Amount:
$600,000.00
Award Year:
1995
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Award Id:
20639
Agency Tracking Number:
20639
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
7960 S. Kolb Rd., Tucson, AZ, 85706
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Dr. S. Guha
(602) 574-1980
Business Contact:
() -
Research Institute:
n/a
Abstract
Single crystals of tungsten (W) with [100] orientation have been demonstrated to exhibit ballistically equivalent performance to depleated uranium (DU) projectiles. Single crystals of W are unfortunately brittle. Also, the state-of-the-art crystal growing techniques limits the diameter of such crystals to less than 10mm. Hence, it is proposed to fabricate tungsten heavy alloy (WHA) projectiles consisting of [100] oriented whiskers/fibers held in a Ni-Fe type matrix. This proposal will address the problems of growing {100] W whiskers/fibers in a heavy alloy matrix. The whiskers/fibers will be grown by the proven VLS process in which MER has considerable expertise (prior experience in growth of SiC and TiB2 whiskers) using a [100] W single crystal substrate, a mixture of WCl6 and H2 as the reactant gases and a Ni-based catalyst (Ni-Fe, Ni-Co, Ni-Cu). The whiskers/fibers will be harvested, cold-pressed and infiltrated in-situ by the catalyst (by varying temperature and atmosphere to promote wetting). This will demonstrate processing that can produce projectiles (>10mm in diameter) for ballistic evaluation. A test scale WHA composite synthesized through the above process will be delivered to the program technical monitor.

* 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