Hydration Tolerant, low Thermal Conductivity (K) Thermal Barrier Coatings

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$750,000.00
Award Year:
2014
Program:
SBIR
Phase:
Phase II
Contract:
FA8650-14-C-2436
Award Id:
n/a
Agency Tracking Number:
F121-175-0149
Solicitation Year:
2012
Solicitation Topic Code:
AF121-175
Solicitation Number:
2012.1
Small Business Information
4401 Dayton-Xenia Road, Dayton, OH, 45432-1894
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
Y
Duns:
074689217
Principal Investigator:
HeeDong Lee
Principal Invesitgator
(937) 426-6900
hdlee@ues.com
Business Contact:
Rick Weddle
Director, Contracts
(937) 426-6900
rweddle@ues.com
Research Institute:
n/a
Abstract
ABSTRACT: This Phase II SBIR program seeks to develop a new thermal barrier coating (TBC) system with a diffusion barrier coating and low thermal conductivity (k) top coat for alleviating oxidation of the bond coat alloy and moisture induced delayed spallation (MIDS), along with increasing the thermal efficiency. TBCs have been applied to the hot sections of aircraft turbine engines to increase engine efficiency and to extend the life of metal components; however, they have not been fully integrated to the engine design due to the potential catastrophic failures at the interfaces where crack formation takes place. This failure is closely linked to the thermally grown oxide (TGO) layer on the bond coats during thermal exposures. Due to this fact, current efforts are focused on developing new bond coat alloys or top coats, but only minimal benefits have been achieved. We propose the development of new barrier coatings and a low k top coat to achieve a longer lifetime and a high thermal insulation. BENEFIT: Thermal barrier coatings (TBCs) are used for the hot sections of the aircraft engines to allow for higher use temperatures; however, the coating effectiveness is limited by unpredictable lifetimes and poor reliability. A new diffusion barrier coating along with a low k top coat could significantly reduce the TGO growth and adverse effects of water (MIDS). This would increase the TBC lifetime and predictability; the full incorporation of the new TBC into military aircraft and commercial engines is expected.

* information listed above is at the time of submission.

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