| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Ceramic Materials and Processing
|
| Presentation Title |
Engineering the Functional and Mechanical Behavior of Multiphase Entropy Stabilized Oxides by Controlling Microstructural Evolution |
| Author(s) |
Jacob Eugene Norman, Alexander Dupuy, Julie Schoenung |
| On-Site Speaker (Planned) |
Jacob Eugene Norman |
| Abstract Scope |
By controlling phase heterogeneity in entropy stabilized oxides, functional and mechanical behavior can be engineered by taking advantage of the temperature dependence of secondary phase segregation. Further tuning of the behavior can be achieved by modifying the chemistry of the entropy stabilized oxides to control the microstructural evolution in the system. We test this hypothesis by producing equimolar (CoCuMgNiZn)O doped with single- and mixed-valence binary oxides. Cr, Fe, Mn, and Ti oxides are used. Conventional sintering is used to consolidate the doped powders into fully dense, bulk samples, and heat treatment is used to control microstructural evolution. X-ray diffraction and electron microscopy are used to characterize phase distribution and microstructure. Functional and mechanical behavior are investigated for samples in which the most complex microstructures exist. Electrical impedance spectroscopy is used to evaluate the electrical responses and understand the variations in conduction mechanism. Mechanical behavior is examined using nanoindentation. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Electronic Materials, Other |