Low-Temperature Joining of SiC-Matrix Composites

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNX11CE07P
Agency Tracking Number: 104907
Amount: $99,860.00
Phase: Phase I
Program: SBIR
Awards Year: 2011
Solicitation Year: 2010
Solicitation Topic Code: O2.04
Solicitation Number: N/A
Small Business Information
12345 W. 52nd Ave., Wheat Ridge, CO, 80033-1916
DUNS: 181947730
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Michael Diener
 Principal Investigator
 (303) 940-2347
 mikee@tda.com
Business Contact
 John Wright
Title: Vice President
Phone: (303) 940-2300
Email: krhodus@tda.com
Research Institution
 Stub
Abstract
The outstanding properties of silicon carbide (SiC) include excellent specific strength, extreme chemical resistance, tremendous hardness, and retention of its high strength at very high temperatures. The brittleness typically associated with a ceramic can be mitigated by forming composites with either carbon or SiC fibers. However, the processes for forming SiC matrix composites limit the size and complexity of the resulting shapes. It is therefore necessary to develop techniques for efficiently joining SiC matrix composite parts. Many such methods have been proposed over the past 25 years, but none is satisfactory, and it remains an active area of research. The joints formed so far either require extremely high temperatures to manufacture or result in unsatisfactory mechanical properties. TDA is herein proposing a route that will result in a pure SiC bond, and will achieve it without requiring any external heat source. As such the joint will be robust, and have the same temperature capabilities and mechanical properties as the matrix. The technology will have met the criteria for exiting technical readiness level (TRL) 3, and some of the criteria for TRL 4, by the end of the Phase I period.

* Information listed above is at the time of submission. *

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