Enhanced Toughness SiC with High Hardness for Advanced Armor

Award Information
Agency:
Department of Defense
Branch
Army
Amount:
$119,581.00
Award Year:
2002
Program:
SBIR
Phase:
Phase I
Contract:
DAAD17-02-C-0052
Agency Tracking Number:
A012-2059
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Ceramatec, Inc.
2425 South 900 West, Salt Lake City, UT, 84119
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
089500540
Principal Investigator:
Raymond Cutler
Senior Research Scientist
(801) 978-2126
cutler@ceramatec.com
Business Contact:
Michael Keene
Vice-President
(801) 978-2152
mkeene@ceramatec.com
Research Institution:
n/a
Abstract
"Recent efforts at engineering the microstructures of SiC have resulted in fracture toughness values that are 2-3 times that of conventionally sintered SiC. However, these methods of toughening have resulted in decreased hardness, a property that iscritical for armor applications. The proposed research attempts to toughen SiC without sacrificing hardness. The Phase I effort is based on toughening using two secondary phases. The first is a sintering aid that results in elongated SiC grains, whichtoughen by crack bridging and crack branching. The second, added at a much higher volume fraction, allows microcrack toughening to enhance the toughness of the composite material without sacrificing hardness. A Taguchi designed experiment is proposed tolook at interactions between the secondary phases, as well as other key variables. A 25 mm x 200 mm x 200 mm SiC composite tile having the target toughness and hardness will be delivered at the end of the Phase I research. Lightweight SiC with enhancedtoughness will allow improved protection for the Army, as well as law-enforcement agencies and private armored vehicles. This same material is expected to perform well in non-corrosive environments, such as nozzles for oil well drilling and water-jetcutting."

* information listed above is at the time of submission.

Agency Micro-sites

US Flag An Official Website of the United States Government