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SBIR-STTR Award
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SBIR-STTR Award
10
Molybdenum Disilicide Matrix Composites Reinforced with Microparticulate Titanium Carbide
Award last edited on: 9/23/02
Sponsored Program
SBIR
Awarding Agency
DOD : MDA
Total Award Amount
$50,000
Award Phase
1
Solicitation Topic Code
SDIO91-013
Principal Investigator
Ranjan Ray
Company Information
Marko Materials Inc
19-1 Sterling Road PO Box 3
North Billerica, MA 01862
(508) 663-2210
N/A
N/A
Location:
Single
Congr. District:
06
County:
Middlesex
Phase I
Contract Number:
N00014-91-C-0211
Start Date:
8/1/91
Completed:
2/1/92
Phase I year
1991
Phase I Amount
$50,000
Molybdenum Disilicide (MoSiE2) based intermetallic materials have proven to be rather formidable materials to process because of their extreme brittleness and poor fracture toughness at low temperature. Another drawback of these materials is their insufficient creep strength at high temperatures. The proposed research focuses on preparation of MoSiE2 base composites reinforced with a high volume fraction of ultrafine particles of hard refractory titanium carbide uniformly dispersed throughout the matrix via a rapid solidification-melt spinning technique. MoSiE2 alloy containing TiC will be prepared as rapidly solidified (RS) powders. RS powders will be composited with a 3D-network of niobium wire (15%). The ductile Nb wire is anticipated to improve fracture toughness of MoSiE2 matrix composites by the crack bridging and crack blunting mechanism. The ultrafine RiC dispersoids will lead to improved creep strength by obstructing dislocation motions, and pinning dislocations/grain boundaries. Composite materials will be characterized for high temperature creep strength and low temperature fracture toughness properties. Microstructure of MoSiE2 matrix composites will be investigated by the SEM and TEM techniques.
Phase II
Contract Number:
----------
Start Date:
00/00/00
Completed:
00/00/00
Phase II year
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Phase II Amount
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