| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Thermodynamics of Materials in Extreme Environments
|
| Presentation Title |
J-7: Effect of Temperature on the Solubility of Corrosion Products of Structural Materials in the Form of Spinels (Fe–Cr–Ni Systems) |
| Author(s) |
Alexander Slobodov, Ann Ivanova, Vladimir Kritsky, Anton Gavrilov, Yulia Vorozhtsova, Dmitry Kremnev |
| On-Site Speaker (Planned) |
Alexander Slobodov |
| Abstract Scope |
A physicochemical model is proposed for calculating the solubility of corrosion products entering the primary coolant of a NPP with PWR. The heterogeneous system {Fe, Ni, Co} - H2O-H3BO3 - LiOH - H2 was chosen for modeling. The input parameters for modeling are the temperature and the initial components of the coolant. Solubility is the main indicator in determining the diffusion processes of the transition of corrosion products into the coolant flow. The dependences obtained allow one to determine the probability of precipitation of dissolved corrosion products, to evaluate the effect of temperature on the physicochemical composition of the coolant. The obtained calculations also make it possible to analyze the effect of water chemistry parameters on the formation of deposits. |