About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Advances in Ceramic Materials and Processing
|
Presentation Title |
Phase Transformations in Entropy Stabilized Oxides |
Author(s) |
Alexander D. Dupuy, Julie M Schoenung |
On-Site Speaker (Planned) |
Alexander D. Dupuy |
Abstract Scope |
Entropy stabilized oxides (ESOs) consist of five or more oxide components which form a single-phase solid-solution structure after processing. Despite their recent discovery, ESOs already show promise in a variety of applications, particularly in electronics and battery components. A unique characteristic of ESOs is their reversible entropy-driven phase transformation between the single-phase and multiphase states. The phase transformation manifests as the formation of secondary phases, whose volume fractions can be controlled through heat treatment. This feature presents an opportunity to produce oxide materials with highly controlled phase states, microstructures, and behavior. In this presentation, what is known about the phase transformation in (CoCuMgNiZn)O will be discussed. Several interesting behaviors of (CoCuMgNiZn)O will be highlighted, including the complex nucleation sequence, the size induced morphological transition, and the grain size dependent phase evolution. The role that processing and microstructure play on the phase transformation behavior will also be discussed. |
Proceedings Inclusion? |
Planned: |
Keywords |
Ceramics, Phase Transformations, Process Technology |