Surface Processing for Enhanced Environmental and Creep-Fatigue Resistance

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-09-C-5200
Agency Tracking Number: F073-038-0869
Amount: $1,249,440.00
Phase: Phase II
Program: SBIR
Awards Year: 2009
Solicitation Year: 2007
Solicitation Topic Code: AF073-038
Solicitation Number: 2007.3
Small Business Information
2 Boar's Head Lane, Charlottesville, VA, 22903
DUNS: 036500804
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Derek Hass
 Dir. Research and Develop
 (434) 977-1405
Business Contact
 Harry Burns
Title: President and CEO
Phone: (434) 977-1405
Research Institution
The ongoing drive to increase the performance and efficiency of propulsion systems has led to increasingly severe operating environments, particularly for the components in the hot sections of turbine engines. One potential life-limiting area of future engines is the turbine disk where significant dwell fatigue may occur if engine temperatures are elevated. The mechanism for this reduction is not fully clear but is related to effects of grain boundary creep and surface oxidation / corrosion. The study proposed here will seek to develop advanced surface chemistry and modification techniques for the nickel-base superalloys used for turbine disks to limit dwell fatigue damage and promote higher operating temperatures in the engine. Key factors that will be studied include: (i) computational approaches to designing novel coating compositions that exhibit minimal interdiffusion and hence excellent compatibility with the substrate owing to chemical activity matching; (ii) the manufacture and testing of selected compositions; and (iii) the application of good performing coatings onto selected regions of a turbine disk. A targeted significant outcome of this study is the establishment of novel and cost-effective surface modifications that confer greatly improved component reliability and durability. BENEFIT: This research is anticipated to result in technology that enables higher use temperatures for turbine disk components resulting in improved capability and efficiency for next generation propulsion systems of interest to future turbine, rocket, ramjet and scamjet engines. Specifically, the advanced environmental compositions and application approaches developed in this work will improve the resistance to creep fatigue of high strength superalloys. This will lead to the realization of many advanced gas turbine engine designs while leading to several percent thrust improvement or specific fuel consumption reduction for current turbine engines. These new capabilities will permit improved engine designs and operating levels on a range of Air Force platforms.

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

Agency Micro-sites

SBA logo
Department of Agriculture logo
Department of Commerce logo
Department of Defense logo
Department of Education logo
Department of Energy logo
Department of Health and Human Services logo
Department of Homeland Security logo
Department of Transportation logo
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government