Prediction of Glass Formation in High-Temperature Environmental Barrier Coating Systems

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-09-M-5212
Agency Tracking Number: F083-070-0420
Amount: $99,999.00
Phase: Phase I
Program: SBIR
Awards Year: 2009
Solicitation Year: 2008
Solicitation Topic Code: AF083-070
Solicitation Number: 2008.3
Small Business Information
303 Bear Hill Road, Waltham, MA, 02451
DUNS: 004627316
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Robert Woodman
 Senior Engineer
 (781) 890-1338
 rwoodman@infoscitex.com
Business Contact
 William Thompson
Title: Contracts Manager
Phone: (781) 890-1338
Email: bthompson@infoscitex.com
Research Institution
N/A
Abstract
Further improvement in gas-turbine engine performance requires development of hot-section structural materials capable of functioning at unprecedentedly high temperatures. SiC fiber-reinforced SiC ceramic-matrix composites (CMCs) have high melting points, but are thermodynamically unstable in combustion environments. Environmental barrier coatings (EBCs) have been developed to protect the substrate from the combustion gases. It is unknown whether current EBCs are capable of protecting CMCs over their intended design life of approximately 2000 h. Physical models that make it possible to predict the effects of the service environment on the materials would enable design decisions without resorting to full-scale testing. In the proposed Phase I SBIR program, Infoscitex will develop a thermodynamic model for a simplified system that will lay the foundation for modelling full-scale parts in realistic combustion environments. Infoscitex will develop a database of thermodynamic data. A range of temperatures and coating systems will be investigated during the Phase I program. This model will be tailored to facilitate incorporation of additional EBC components in later phases. BENEFIT: The proposed modelling technology will allow optimization of high-temperature engine parts while minimizing costly experimentation. This technology will be applicable across the aerospace propulsion industry. The successful model will enable next-generation performance turbine engines. The model may also have applications beyond the aerospace propulsion industry, such as in glass manufacturing.

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

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