| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Advanced Characterization of Materials for Nuclear, Radiation, and Extreme Environments
|
| Presentation Title |
Characterization of Microstructure Evolution in Ceramic Materials Using Acoustic and Thermal Transport Measurements |
| Author(s) |
Marat Khafizov |
| On-Site Speaker (Planned) |
Marat Khafizov |
| Abstract Scope |
Progress in irradiation behavior of ceramics depends on availability of in-situ microstructure characterization tools. Development of methods relying on the sensitivity of material’s transport properties to crystalline defects will be reviewed. Optical spectroscopy is powerful for characterization of ceramics, but in-situ implementations have been limited to studies involving thermal annealing and charged particles. Alternatively in metals, in-situ electrical conductivity measurements under neutron environment have paved the way for fundamental understanding of irradiation behavior in metals. First, utility of thermal transport measurements utilizing modulated thermoreflectance method to isolating the impact of point defects, dislocation loops, and grain boundaries will be presented. Second, propagation of acoustic waves in solid materials monitored using picosecond ultrasonics as an attractive tool for characterizing grain microstructure in optically transparent ceramics will be discussed. Finally, interdigitated transducer surface acoustic wave approach to monitor early stages of radiation damage evolution under neutron irradiation will be introduced. |