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

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-14-C-2436
Agency Tracking Number: F121-175-0149
Amount: $750,000.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: AF121-175
Solicitation Number: 2012.1
Timeline
Solicitation Year: 2012
Award Year: 2014
Award Start Date (Proposal Award Date): 2014-02-19
Award End Date (Contract End Date): 2016-05-16
Small Business Information
4401 Dayton-Xenia Road
Dayton, OH 45432-1894
United States
DUNS: 000000000
HUBZone Owned: No
Woman Owned: Yes
Socially and Economically Disadvantaged: No
Principal Investigator
 HeeDong Lee
 Principal Invesitgator
 (937) 426-6900
 hdlee@ues.com
Business Contact
 Rick Weddle
Title: Director, Contracts
Phone: (937) 426-6900
Email: rweddle@ues.com
Research Institution
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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