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Meeting MS&T23: Materials Science & Technology
Symposium Emergent Materials Under Extremes and Decisive In Situ Characterizations
Presentation Title In-situ Raman Studies on Synthesis and Oxidation of UC<sub>1-x</sub>N<sub>x</sub>
Author(s) Sam Karcher, Xiaofeng Guo, John McCloy
On-Site Speaker (Planned) Sam Karcher
Abstract Scope Uranium carbide and uranium nitride are candidate accident tolerant fuel (ATF) systems which may afford a more stable waste form compared to uranium oxide-based fuels. These non-oxide fuels are still not well understood in comparison to uranium oxide fuels and therefore critical knowledge gaps exist when considering thermodynamic models pertaining to safe long-term disposal. In this study in-situ Raman spectroscopy is explored as a technique to a) measure the formation of UC<sub>1-x</sub>N<sub>x</sub> by carbothermic reduction of UO<sub>2</sub> and b) measure oxidation and corrosion of UC<sub>1-x</sub>N<sub>x</sub> and c) gain insight on additional defect structures as a result of doping with simulated fission products (ex. Ce, Nd, Yb, Zr). Thermogravimetric analysis and differential scanning calorimetry (TGA/DSC) are used to determine UN/UC formation and oxidation kinetics and provide a quantitative refence to correlate with in-situ Raman data.


Capturing Laser Induced Dynamics of Materials via Single-Shot Ultrafast Transmission Electron Microscopy
HP-XAFS and Its Application to Topological Insulator Bi2Te3
In-situ Observations of the High Temperature Melting Behaviour of Ce-brannerite
In-situ Raman Studies on Synthesis and Oxidation of UC1-xNx
In-situ/Operando Characterization of Emerging Materials with MeV Ultrafast Electron Diffraction at SLAC National Accelerator Laboratory
In Situ Characterization and Modeling of Spent UO2 Fuel under Ion Irradiation
Irradiation Induced Structural and Thermal Conductivity Changes in Nuclear Fuels
Magnetic Scattering and Spectroscopy at High Pressures at APS and APS-U
Modulation of Structure-function Motifs in Optoelectronic Metal Halides Using High Pressure
Neutron Scattering for Studying Materials Under Extreme Conditions
Perspectives of IXS and NRS Studies in the APSU Era
Polar Magnets in High-Pressure Exotic Perovskites
Pressure-induced Non-monotonic Crossover of Steady Relaxation Dynamics in a Metallic Glass
Pressure Driving Dual-layer Superconductivity in 4Hb-TaSe2 TMD
Structural Manipulation of Ceramic Materials via Extreme Conditions
Will High-entropy Carbides Be Enabling Materials for Extreme Environments?

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