About this Abstract |
Meeting |
MS&T24: Materials Science & Technology
|
Symposium
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Ceramic Materials for Nuclear Energy Systems
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Presentation Title |
Performance of CrAl/Al2O3 Multilayer H2 Permeation Barrier Designed for High Temperature
Metal Hydride-Based Neutron Moderators |
Author(s) |
Sumit Bhattacharya, Chase N. Taylor, Thomas F. Fuerst, Nathan Gehmlich, Yinbin Miao, Shipeng Shu, Holly Renee Trellue, Abdellatif M. Yacout |
On-Site Speaker (Planned) |
Sumit Bhattacharya |
Abstract Scope |
Developing robust cladding for hydride-based microreactor moderators is essential for ensuring stability under challenging reactor conditions. The DOE-NE Microreactor Program has been working with titanium-zirconium-molybdenum (TZM) canned yttrium hydride as a solution, but enhancements are needed to minimize hydrogen loss from the moderator for continuous high temperature operations and resilience during power transients. At Argonne National Laboratory (ANL), we have developed a class of metal/ceramic nano-multilayer coatings (CrAl/Al2O3) that significantly impede hydrogen permeation at temperatures up to 800 °C. These barrier coatings have undergone rigorous testing against high-temperature interactions, thermal cycling, and irradiation, showing they have the potential for substantially extending the longevity and effectiveness of TZM-based enclosures in microreactor applications. This advancement is presented in this work with details of the barrier design and experimental data showing its effectiveness. |