| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Advanced Characterization of Materials for Nuclear, Radiation, and Extreme Environments IV
|
| Presentation Title |
Thermodynamic Modeling and Calculation of Phase Formation Processes Under Irradiation Conditions of Uranium-plutonium Nitride Fuel |
| Author(s) |
Alexander Arsenievich Slobodov, Alexey Krasikov, Mikhail Radin, Anna Ivanova |
| On-Site Speaker (Planned) |
Alexander Arsenievich Slobodov |
| Abstract Scope |
The phase-chemical transformations and composition of the products of interaction between uranium-plutonium nitride fuel and nuclear fission fragments for a wide range of compositions (depending on the irradiation time - 375-1500 days) and temperatures (270-2500 TO).
Based on the developed thermodynamic methods and databases, a cycle of optimization calculations of phase-chemical transformations and the composition of the interaction products was performed.
Regularities and features of the influence of state parameters (composition and temperature) on phase formation and environmentally hazardous conditions for the processes, the corresponding compounds and transformations are revealed.
A strict classification of substances according to the characteristics of stability, metastability and instability of the reactor system has been obtained. These are substances that can form or decompose (depending on the operating conditions), or transform (also under certain conditions), or radically change their properties (depending on the temperature and composition of the system), etc. |