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Enhanced Toughness SiC with High Hardness for Advanced Armor

Award Information

Department of Defense
Award ID:
Program Year/Program:
2002 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Technology Holding, LLC
800 North 350 West #250 Salt Lake City, UT 84103-1441
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Woman-Owned: Yes
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2002
Title: Enhanced Toughness SiC with High Hardness for Advanced Armor
Agency / Branch: DOD / ARMY
Contract: DAAD17-02-C-0052
Award Amount: $119,581.00


"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."

Principal Investigator:

Raymond A. Cutler
Senior Research Scientist

Business Contact:

Michael A. Keene
Small Business Information at Submission:

Ceramatec, Inc.
2425 South 900 West Salt Lake City, UT 84119

EIN/Tax ID: 870322278
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No