Symposium A addresses coatings and surface modifications whose primary purpose is to sustain system performance under high-temperature and harsh thermochemical environments. Topics of interest include high-temperature aging, stress, corrosion (e.g., oxidation, sulfidation, carburization, and water-accelerated degradation), catalytic and physical fouling (e.g., coking, ash fouling, and slagging) and wear (e.g., abrasion, erosion, and impact), characterization and mechanistic understanding of high-temperature degradation and mitigation technologies. Typical applications span gas/steam turbines, chemical/petrochemical processes as well as emerging renewable energy technologies, such as geothermal, biomass and concentrated solar power.
A1. Coatings to Resist High-temperature Oxidation, Corrosion, and Fouling
This session spans all aspects of the design, processing, and performance of coatings to resist high-temperature oxidation, corrosion, and fouling. Topics include composition and process optimization, characterization of coatings and reaction products, development of advanced processing methods such as additive manufacturing, modeling of fabrication processes and degradation mechanisms, lifetime prediction and performance assessment in realistic conditions (atmosphere, stress, cycling, erosion, etc.). Environments of interest include steam, SCO2, molten salts, liquid metal, hydrogen, ammonia, biofuels, etc. for applications such as turbomachinery, fuel cell and electrolyzers for green hydrogen production, concentrating solar power plants, advanced nuclear reactors, petrochemical and gasification plants, waste incinerators and metal-forming and recycling industries. Contributions addressing research as well as solutions are encouraged, with a focus on coatings and surface modification.
A1. Invited Speakers:
- Alina Agüero Bruna, Instituto Nacional de Técnica Aeroespacial INTA, Spain, “Performance of Innovative High-Temperature Coatings after Exposure in a Pilot Plant Burning Biomass”
- Denis Cumming, University of Sheffield, UK, “Controlling the Decomposition of Metal Salts to Enhance Nanostructured Solid Oxide Cell Electrode Performance and Reliability”
- Suzue Yoneda, Hokkaido University, Japan, “Development of a New Coating Against High-Temperature Erosion-Corrosion in Fluidized Bed Biomass Boiler Condition”
A2. Thermal and Environmental Barrier Coatings
This session focuses on the design, development, synthesis, and applications of thermal and environmental barrier coatings for gas and high volume H2 turbines and other high and ultra- high temperature applications. Topics include process understanding and novel processing methods, characterization of coating microstructure, properties (thermal, optical, mechanical, and chemical), testing methods (destructive and nondestructive), structure-property relationships, residual stresses, aging phenomena, substrate/coating system effects, and failure mechanisms, including CMAS attack, erosion, abrasion, and impact. These topics can be addressed for experimental research and/or modeling development.
A2. Invited Speakers:
- Bryan Harder, NASA, USA, “Oxidation and Failure in Environmental Barrier Coatings”
- Mackenzie Ridley, ORNL, USA, “Cristobalite Transformation in Environmental Barrier Coatings”
- Elizabeth J. Opila, University of Virginia, USA, “Design of Multi-Component EBCs for Property Optimization”
- Elisa Zaleski, Pratt & Whitney, USA, “Mechanisms of CMAS Attack on Aero-Engine Components”