Advanced Materials Issues in Supercritical Carbon Dioxide Email Page
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Performer:  Oak Ridge National Laboratory (ORNL) Location:  Oak Ridge, Tennessee
Project Duration:  10/01/2015 – 09/30/2018 Award Number:  FWP-FEAA123
Technology Area:  Advanced Turbines Total Award Value:  $650,000
Key Technology:  Turbo-machinery for Supercritical CO2 Power Cycles DOE Share:  $650,000
Performer Share:  $0

Specimen coupon holder being loaded into ORNL<br/>high-pressure autoclave for testing in supercritical carbon dioxide at 750°C/300 bar.
Specimen coupon holder being loaded into ORNL
high-pressure autoclave for testing in supercritical carbon dioxide at 750°C/300 bar.

Project Description

The proposed work will continue to address the materials issues associated with scaling-up supercritical carbon dioxide (sCO2) Brayton cycle systems to higher temperatures for increased efficiency and larger size for commercial power production. The effort is intended to understand the applicable corrosion mechanisms in sCO2 as a function of impurity (e.g., O2, H2O) levels in both closed and open systems. Once this experimental capability is established, the experimental plan will also continue to study environmental effects on alloy mechanical properties with complimentary efforts in characterization and lifetime modeling.

Project Benefits

Alloy-specific temperature limits developed previously and further evaluated in this project will facilitate materials selection and guide initial efforts in alloy design with a goal of lowering the material costs for new utility-size sCO2 systems.

Presentations, Papers, and Publications

Contact Information

Federal Project Manager Vito Cedro:
Technology Manager Richard Dennis:
Principal Investigator Bruce A. Pint: