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Development of Textured and Single Crystal Garnet Fibers for Advanced Oxide CMCs

Award Information

Department of Defense
Air Force
Award ID:
Program Year/Program:
2001 / STTR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Ceramic Composites, Inc.
133 Defense Highway, Suite 212 Annapolis, MD 21401-8907
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Woman-Owned: Yes
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2001
Title: Development of Textured and Single Crystal Garnet Fibers for Advanced Oxide CMCs
Agency / Branch: DOD / USAF
Contract: F49620-01-C-0058
Award Amount: $99,988.00


The proposed research effort focuses on developing a method to synthesize and crystallize doped YAG to produce textured or single crystal fibers that exhibit little degredation in strength and excellent creep resistance at temperatures in excess of 1400C.YAG will be synthesized from polymerized sol gel precursors, drawn into fibers and continuously crystallized using a quadrapole crystallizer. This approach is continuous, and fully scaleable. The effect of cationic dopants on the recrystallization of YAGwill be investigated by electron microscopy. Measurment of the individual tensile strengths and creep resistance of the fibers at temperatures up to 1400C will be performed. Microstructures and mechanical property information that is obtained will beused to influence the processing conditions that are selected. The results will establish further understanding of the structure-process relationship for the fabrication of stable, creep resistant oxide fibers for a broad range of applications.It isexpected that the proposed research will lead to the development of a stable high temperature oxide fiber with little loss in strength and exceptional creep resistance at temperatures in excess of 1400C. When scaled to commercial size and quantities,these fibers will be used extensively for oxide preforms for a range of CMC engine components - combustors, turbines, commpressors, exhaust nozzles, vanes, blades and shrouds etc.. Additionally, if single crystals can be produced, extensive opportunitiesexist for fiber optic applications.

Principal Investigator:

Mark Patterson
Chief Scientist

Business Contact:

Sharon Fehrenbacher
Vice President
Small Business Information at Submission:

1110 Benfield Blvd. Millersville, MD 21108

EIN/Tax ID: 521741350
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Research Institution Information:
1304 West Green Street, College Of Engineering
Urbana, IL 61801
Contact: Waltraud M. Kriven
RI Type: Nonprofit college or university