| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Advanced Characterization of Materials for Nuclear, Radiation, and Extreme Environments
|
| Presentation Title |
Explaining the Corrosion Morphology of Structural Materials in Molten Fluoride Salts With/Without Radiation |
| Author(s) |
Weiyue Zhou, Yang Yang, Miaomiao Jin, Lingfeng He, Andrew M Minor, Michael P Short |
| On-Site Speaker (Planned) |
Weiyue Zhou |
| Abstract Scope |
Corrosion of Cr-bearing structural metals in molten salts proceeds mainly via selective leaching of Cr. Apart from understanding the interfacial reaction and its thermodynamics, the kinetics of mass transport within the alloys are equally important. One of the biggest challenges is interpreting the observed corrosion morphology. By exploring the parameter space of temperature and concentration, we categorize the morphology of the response into several groups. Advanced characterization is critical to elucidating each mechanism. For MSR applications, it is also crucial to understand the synergy effect of radiation and corrosion. By running simultaneous proton irradiation and corrosion experiments on Ni-Cr model alloys, we show that proton irradiation, under certain conditions, can decelerate corrosion in molten salts. Armed with knowledge of the corrosion mechanisms responsible, we will present the kinetics behind the observed deceleration to enable prediction of its utility in MSRs. |