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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Energy Materials 2017: Materials in Clean Power
Presentation Title The Impacts of Alternative Fuels and Associated High Water Vapor Content Environments on the Stability and Aging of Turbine Hot-Section Materials
Author(s) Daniel R. Mumm
On-Site Speaker (Planned) Daniel R. Mumm
Abstract Scope This talk will focus on evaluating the impacts of alternative fuels (coal-derived syngas, high-hydrogen content fuels, etc.) on the degradation of turbine hot-section materials. A primary focus is the role of associated elevated water vapor levels on the evolution of TGO and TBC systems. In studies of oxide growth on select bond coat materials, it is shown that the transient oxidation behavior is highly dependent upon the pH2O in the exposure environment. Subsequently, this talk will discuss the role of high pH2O environments on TBC materials stability. High temperature aging was performed on thermal-sprayed YSZ coatings in varying water vapor content environments. The phase evolution in different exposure environments illustrates that there is a distinct acceleration of aging and development of undesirable phases in elevated pH2O environments. The mechanisms underpinning this behavior, and implications for the durability of TBC coatings in turbines using high-hydrogen content fuels, will be discussed.
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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