Design, Fabrication and Performance Characterization of Near-Surface Embedded Cooling Channels (NSECC) with an Oxide Dispersion Strengthened (ODS) Coating Layer Email Page
email
Print This Page
print
Performer: University of Pittsburgh
Near-Surface Embedded Cooling<br/>Channel (NSECC) Concept
Near-Surface Embedded Cooling
Channel (NSECC) Concept
Website: University of Pittsburgh
Award Number: FE0025793
Project Duration: 10/01/2015 – 09/30/2018
Total Award Value: $1,015,490
DOE Share: $798,594
Performer Share: $216,896
Technology Area: Advanced Turbines
Key Technology: Advanced Combustion Turbines
Location: Pittsburgh, Pennsylvania

Project Description

The University of Pittsburgh (Pitt), with support from West Virginia University (WVU), will develop an innovative approach to immensely improve the level of thermal protection for hot-section components—such as turbine airfoils—in modern and future gas turbines. The approach will make use of oxide dispersion strengthened (ODS) material to form a thermal-oxidation protection layer over a single crystal superalloy substrate, in conjunction with the concept of near-wall cooling. This research includes four inter-related project objectives: (1) design highly heat-transfer augmented and manufacturable internal cooling channels for the development of near surface embedded cooling channels (NSECC); (2) produce ODS particles between 45 and 105 microns, which will be used in an additive manufacturing (AM) process based on laser deposition to build NSECC test modules; (3) develop a fabrication process through AM for coating either a densified ODS layer over a grooved single crystal superalloy substrate to form an enclosed NSECC or an ODS layer with cooling channels embedded within the ODS layer atop a single crystal superalloy metal substrate; and (4) characterize the thermal-mechanical material properties and cooling performance of the AM produced ODS-NSECC protective module under high-temperature conditions. Pitt will be responsible for all the tasks pertaining to fluid flow and heat transfer and will also contribute to the manufacturing front and develop ODS coating techniques. WVU will be responsible for producing ODS particles (powder) for the laser deposition process at Pitt as well as perform thermal cyclic testing on AM-built ODS components in both dry- and wet-air environments. Microstructures at the interface between the ODS and substrate will be jointly examined.

Project Benefits

At the conclusion of this project, the resulting data and new technology will be readily available for turbine original equipment manufacturers (OEMs) to implement as part of their hot-section management portfolios. Overall, it is anticipated that research outcomes from the study will significantly advance hot-section technology by providing better cooling with less coolant air needed. This, in turn, will lead to improved cycle efficiency for the entire turbine system.

Contact Information

Federal Project Manager Seth Lawson: seth.lawson@netl.doe.gov
Technology Manager Richard Dennis: richard.dennis@netl.doe.gov
Principal Investigator Minking Chyu: mkchyu@pitt.edu

 

Click to view Presentations, Papers, and Publications