|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Advanced Characterization and Modeling of Nuclear Fuels: Microstructure, Thermo-physical Properties
||Thermal Conductivity Measurement of Microstructures in Irradiated Nuclear Fuels
||Yinbin Miao, Lakshmi Amulya Nimmagadda, Jingyi Shi, Kun Mo, Bei Ye, Shipeng Shu, Peter Mouche, Winfried Petry , Sanjiv Sinha, Abdellatif M Yacout
|On-Site Speaker (Planned)
Thermal conductivity is an important thermophysical property of nuclear fuels. Advanced nuclear fuels intrinsically consist of lower-length-scale structures with enhanced properties. Microstructural modifications caused by the harsh environment in reactors (e.g., high-energy radiation and elevated temperatures) lead to changes in the thermophysical properties. Accurate measurement of thermal conductivity of nuclear fuels relevant to lower-length-scale features can be an element in improving our understanding of their in-pile behavior. The suspended bridge method, originally developed for nanomaterials, was adopted to measure the thermal conductivity of fuel samples of reduced size. Measurements were performed on prepared miniature specimens of common nuclear fuels materials. The results were compared against the literature values of bulk specimens to validate the method. In addition, a series of radiation-induced microstructures obtained from ion-irradiated nuclear fuel samples were also measured for thermal conductivity. The advantages of utilizing the suspended bridge method for nuclear fuel and materials research are discussed.
||Nuclear Materials, Characterization, Nanotechnology