High-Temperature Environmental Barrier Coating for Silicon Carbide Composites

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA9550-09-C-0142
Agency Tracking Number: F08B-T21-0125
Amount: $100,000.00
Phase: Phase I
Program: STTR
Awards Year: 2009
Solicitation Year: 2008
Solicitation Topic Code: AF08-BT21
Solicitation Number: 2008.B
Small Business Information
25 Health Sciences Drive, Suite 125, Stony Brook, NY, 11790
DUNS: 083265558
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Brian Keyes
 Project Engineer
 (631) 444-6691
 bkeyes@mesoscribe.com
Business Contact
 Jeffrey Brogan
Title: CEO
Phone: (631) 444-6645
Email: jbrogan@mesoscribe.com
Research Institution
 Stony Brook University
 Susan Gasparo
 Research Foundation
Office of Sponsored Programs
Stony Brook, NY, 11794
 (631) 632-9029
 Nonprofit college or university
Abstract
SiC/SiC fiber reinforced composites have been developed for use in gas turbine hot sections allowing for increased temperatures and therefore, increased fuel efficiency and lower emissions. A thermally-sprayed functionally-graded thermal/environmental barrier coating is proposed for SiC/SiC composites designed to provide the necessary thermal protection while shielding the SiC/SiC composite from water vapor.  Stresses in the coating system are mitigated through functionally graded layers and through porosity control which allows tailoring of elastic modulus. Materials selection for the various coating layers will consider those which have demonstrated excellent thermal protection and minimal water vapor degradation. BENEFIT: SiC/SiC  fiber reinforced composites have been developed with the goal of increasing combustion gas temperatures, lowering weight and extending the lifetimes of turbine components.  These goals also lead to the additional benefits of reduced NOx and CO2 emissions, higher fuel efficiency, and higher thrust-to-weight ratios for aircraft. The proposed coating technology will increase the durability of ceramic composite engine components exposed to high temperature combustion environments.)

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

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