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Silicon Nitride Seal for Thermal Barrier Coating in Gas Turbines for Extended Engine Life

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8649-20-P-0999
Agency Tracking Number: FX20A-TCSO1-0054
Amount: $499,904.00
Phase: Phase II
Program: STTR
Solicitation Topic Code: AF20A-TCSO1
Solicitation Number: X20.A
Solicitation Year: 2020
Award Year: 2020
Award Start Date (Proposal Award Date): 2020-09-25
Award End Date (Contract End Date): 2021-12-25
Small Business Information
5204 E. Ben White Blvd
Austin, TX 78741-1111
United States
DUNS: 184880446
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Tim Hossain
 (512) 934-5331
Business Contact
 Tim Hossain
Phone: (512) 934-5331
Research Institution
 University of Dallas
 Will Flanagan
1845 East Northgate Drive
Irving, TX 75062-4736
United States

 (303) 909-0118
 Nonprofit College or University

Cerium Labs is reporting the results of its STTR Phase I funding for a silicon nitride seal for thermal barrier coating in gas turbines for extended engine life. Gas Turbine Engines (GTEs) operate at high temperatures, submersed in a high density gas. Thermal Barrier Coatings (TBCs) are widely used to protect the engine superalloys from oxidation and other degradation. A breakdown in TBC coating allows the engine superalloy to be corroded and engine performance degrades. With an AFWERX Open Topic STTR (X20.A, Award FA864920P0565), we explored a patented silicon nitride seal which can protect the TBC, allowing increased engine performance and decreased maintenance and replacement costs. Samples of Yttrium Stabilized Zirconia (YSZ) were obtained which were coated with silicon nitride using plasma-enhanced chemical vapor deposition. Transmission Electron Microscopy (TEM) cross sections of the silicon nitride coating before and after annealing show no cracking, delamination, or other degradation at GTE temperatures (800C). With this successful feasibility study in hand, we are encouraged to continue pursuing this technique on larger and more realistic samples in Phase II.

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

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