|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Advanced Characterization and Modeling of Nuclear Fuels: Microstructure, Thermo-physical Properties
||Synergistic Electron/Thermal Microscope for High-throughput Screening of Emerging Nuclear Materials
||Yuzhou Wang, Cody Dennett, Zilong Hua, Robert Schley, Daniel Murray, Geoffrey Beausoleil II, David Hurley
|On-Site Speaker (Planned)
The ever-increasing demands of next generation nuclear reactors requires the development of new materials with better performance. To expedite the discovery and qualification of emerging nuclear materials, advanced techniques that are able to characterize microstructure and thermophysical properties in high-throughput manner is needed. Under the Nuclear Materials Discovery and Qualification initiative (NMDQi), we construct a synergistic electron/thermal microscope that can characterize local microstructure, chemistry, and thermal properties correlatively. The thermal microscope is based on the square-pulse thermoreflectance technique, where the rising surface temperature after square-wave laser excitation is compared with a continuum heat transport model to extract interested thermophysical properties, including thermal diffusivity and thermal conductivity. The thermal microscope is fiberized and miniaturized to fit inside the vacuum chamber of a scanning electron microscope and the results of both techniques are linked through spatial correlation. We demonstrate such instrument on advanced fuels and alloys to show its great applicability.
||Characterization, Nuclear Materials,