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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Energy Materials 2017: Materials in Clean Power
Presentation Title Early Stage Oxidation of Alloy 617 in CO2 Power Cycle Environments
Author(s) Richard P. Oleksak, John P Baltrus, Casey S Carney, Jinichiro Nakano, Anna Nakano, Gordon R Holcomb, Omer N Dogan
On-Site Speaker (Planned) Richard P. Oleksak
Abstract Scope Next-generation power cycles based on supercritical CO<SUB>2</SUB> (sCO<SUB>2</SUB>) have gained significant interest due to the potential for improved conversion efficiency and reduced cost. A primary barrier to adoption of this technology is the unknown oxidation/corrosion behavior of alloy materials in sCO<SUB>2</SUB> environments. In this study, we investigated the oxidation/corrosion resistance of a candidate solid-solution strengthened Ni-base superalloy. Alloy 617 coupons were exposed to CO<SUB>2</SUB> at 700 C and 1 bar for times ranging from 5 minutes to 500 hours to gain insight into the early stages of oxidation. Additional coupons were exposed for 500 hours at 700 C and 250 bar to assess the effects of pressure and the supercritical phase. The exposed samples were characterized using transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS) to evaluate the suitability of this class of alloys for high temperature CO<SUB>2</SUB> power cycle environments.
Proceedings Inclusion? Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

C-21: Novel Hydrogen Storage Reaction Pathway of LiBH4+MgH2 Mixtures Enabled by Ball Milling and Aerosol Spraying
C-22: Pyrolysis of Different Wood Species Investigated by TGA-GC-MS
Corrosion of Energy System Materials in Supercritical Carbon Dioxide (sCO2)
Creep-Fatigue-Oxidation Interactions under Fossil Energy Service Conditions
Defect Chemistry of Black Anatase TiO2: An Ab Initio Study
Early Stage Oxidation of Alloy 617 in CO2 Power Cycle Environments
Effect of Pressure and Thermal Cycling on Compatibility in CO2 for Concentrated Solar Power Applications
High Temperature Oxidation of Ni-base Alloys and Stainless Steels in Supercritical CO2 for Power Systems Applications
Manipulating Creep through Modifying Gamma Prime Coarsening Rate in Haynes 282 for A-USC Power Plants
Microstructural Stability of High Cr Containing FeCrAl Alloys with Minor Alloying Additions
Nickel-doped Titania Nanotube Arrays and Their Application in Hydrogen Production
Pb-Bi-Sb and Pb-Bi-Ge: Novel Alternative Alloys for Application as Heat-transport Fluids in Concentrated Solar Power Systems
Phase Relation Prediction for AgxCu1-xGayIn1-ySe2 PV Absorber Layers
Solid-State, High-Shear Manufacturing to Enable Lower Cost and Higher Performance Materials for Energy Conversion
The Composite Materials with Semiconductor and Ionic Conductor for Novel Low Temperature Solid Oxide Fuel Cells
The Impacts of Alternative Fuels and Associated High Water Vapor Content Environments on the Stability and Aging of Turbine Hot-Section Materials
Transient Liquid Phase Bonding of Ni-based-superalloy-H230 for Microchannel Heat Exchanger for Application in Supercritical CO2 Cycles

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