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Meeting 2023 TMS Annual Meeting & Exhibition
Symposium Advances in Powder and Ceramic Materials Science
Presentation Title Electrical Behavior of Multi-phase Entropy-stabilized Oxides
Author(s) Arturo A. Meza, Alina M. Vizcaya, Alexander Dupuy, Julie M. Schoenung
On-Site Speaker (Planned) Arturo A. Meza
Abstract Scope Entropy-stabilized oxides (ESO) consist of five or more oxide components that form a random solid solution structure after processing. ESOs have garnered significant attention due to their interesting functional properties and expanded compositional space. For example, (Cu,Co,Mg,Ni,Zn)O shows promise for fuel cell and batteries components. Here we explore the role of processing, microstructure, and secondary phases on the electrical behavior of bulk (Co,Cu,Mg,Ni,Zn)O. Samples were consolidated using conventional sintering and heat treated at a range of temperatures and times to control the phase state. Temperature dependent impedance spectroscopy was used to investigate the role of microstructure on the electrical conductivity and activation energy for electrical transport. Electron and atomic force microscopy techniques were used to characterize the microstructure and tie it to the electrical behavior. Results show that processing and microstructure significantly influence the electrical behavior in (Co,Cu,Mg,Ni,Zn)O. Mechanisms governing the contribution of microstructure to electrical behavior will be discussed.
Proceedings Inclusion? Planned:
Keywords Powder Materials, Phase Transformations, Energy Conversion and Storage

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Applying the High Entropy Concept in Single-atom Catalysts and Ceramic Battery Cathode Active Materials
CeO2-x Nanorods as Effective Cathode Host Materials in Li-S Batteries
Ceramic Additive Manufacturing: Applications in High-Temperature Electronics
Compositionally Complex Oxide Ceramics: Synthesis, Structure and Properties
Compositionally Complex Oxides: Synthesis, Characterization, Challenges, and Opportunities
Compositionally Complex Perovskite for Solar Thermochemical Water Splitting
Design of High Entropy Ceramics with IGZO-based Compounds for Electroceramics Applications
Developing Transparent Ceramics for Laser Power Scaling and Laser Welding
Development of an Experimentally Derived Model for Molybdenum Carbide (Mo2C) Synthesis in a Fluidized-bed Reactor
Development of High Voltage Multilayer Ceramic Capacitor
Dislocation-based Room Temperature Plasticity in High Entropy Oxides
Dual Cubic Perovskite Phases in Macro-Equimolar High Entropy Oxides
Effect of Y2O3 and Al Addition on Mechanical Properties and Micrographic Features of Invar Based ODS Alloy Prepared by Mechanical Alloying + Spark Plasma Sintering
Effects of Temperature on Domain Wall Mobility in Single Crystal BaTiO3
Electrical Behavior of Multi-phase Entropy-stabilized Oxides
Energy Dispersive X-ray Diffraction with Synchrotron Radiation for Measurement of Residual Elastic Mismatch Strain in Composites and Coating Systems for Extreme Environments
Energy Efficient Spark Plasma Sintering Fabricating Transparent Alumina
Enhanced Li-ion Conductivity in Compositionally Complex Perovskite Oxides
Enhancing Reinforcing Efficiency of Sic Particles in Aluminium Matrix Composites with Intercalated Oxygen Atoms
Fabrication of Ultra-lightweight and Highly Porous Alumina Scaffolds by a Novel Sol-gel/Freeze-casting Hybrid Method
Grain size Confinement of Secondary Phases in Entropy Stabilized Oxides
Influence of Secondary Phase Segregation on Electrical Behavior in Entropy Stabilized Oxides
Interplay Between Structure, Charge, and Spin in Entropy-Stabilized Oxides for Widely Tunable Responses
Lithium vs. Sodium Solid State Batteries: Multiscale Modelling Methodology for Diffusion and NMR Properties in Li and Na Ceramics Solid Electrolytes
Magnetron Sputtering of Ti3AlC2 MAX Phase Coating on Carbon Nanofiber and Its Electrochemical Performance
Mechanical Behavior of Multiphase Entropy Stabilized Oxides
Microstructure Engineering Using Entropic Phase Transformations
Mixed-Alkali Effect on Metaphosphate Glass Forming Liquids
Modelling and Measuring Optical Properties of Polycrystalline Ceramics
Multifunctional High-entropy Ceramics
N-1: Effect of Milling Time and Powder Particle Size on Microstructure and Mechanical Properties of Al- oxide-CNT Composites
N-2: Influence of Microstructure and Sodium Doping on Charge Transport in High Entropy Oxides
N-3: Mechanical Behavior of Milli-Scale AM Metallic Lattice Structures as Reinforcement for Ceramic Matrix Composites
N-4: Role of Phase Heterogeneity on Mechanical Behavior in Entropy Stabilized Oxides
N-5: TEM Investigation of the Strengthening Effects from Grain Boundary Segregation and Precipitation in W- and W-Mo-containing High-entropy Borides
N-6: Use of Ceramic Waste in Different Percentages as a Replacement of the Fine Aggregate In Mortars
Plasma Sprayed Carbon Nano Fillers Reinforced Lanthanum-cerate Hybrid Composite Coating with Outstanding Toughness
Printed Carbon Nanotubes and Graphene Heaters for Drying Ceramics
Rare-earth Doped Polycrystalline Alumina for High-energy Laser Applications
Refractories Ceramic Cements Based on Double Oxides
Selective Extraction of TiO2 from Spent SCR Catalysts and Preparation of Fly Ash-based Photocatalysts
Surface-engineered Metal Oxide Nanocrystals: Redox Chemistry, Catalysis and Beyond
The Role of Aliovalent Dopants in Multiphase Entropy Stabilized Oxides
Toughening Mechanisms of Nano-oxide Dispersion Strengthening (NDS) on CoCuNiFeMn High Entropy Alloys with Nano-twin Fabricated via Powder Metallurgy
Tunable Grain Boundary Conductivity in Sodium Doped High Entropy Oxides
Tunable Self-assembled Metal and Metal-oxide Nanostructures Embedded in Complex Concentrated Oxide Thin Films
Understanding Enhanced Thermal Stability in Zirconia-based Aerogels

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