About this Abstract |
Meeting |
MS&T24: Materials Science & Technology
|
Symposium
|
Ceramic Materials for Nuclear Energy Systems
|
Presentation Title |
Advanced Moderator Module (AMM) Manufacturing |
Author(s) |
Sumit Bhattacharya, Yinbin Miao, Holly Renee Trellue, Erik P. Luther, Abdellatif M. Yacout |
On-Site Speaker (Planned) |
Sumit Bhattacharya |
Abstract Scope |
Very High Temperature Reactors (VHTR) traditionally utilize graphite for neutron moderation due to its durability and low neutron absorption. With micro-reactors operating at higher temperatures, there's a shift towards more compact, efficient hydrogen-based moderators. Argonne National Laboratory (ANL) has developed an Advanced Moderator Module (AMM) using refractory metals, ceramic matrix composites (CMCs), and advanced coatings to create effective hydrogen permeation barriers. This AMM features a metal hydride core, like YH2-x, encased in a ductile niobium liner with a hydrogen barrier coating, and fortified by silicon carbide (SiC) ceramic matrix composite cladding. The composite cladding offers crucial structural support and shields against reactions with the surrounding graphite matrix. This design not only reduces hydrogen loss and thermal neutron absorption at high temperatures but also boosts neutronics performance and extends the lifespan of both molten salt and gas-cooled high-temperature micro-reactors. The design and manufacturing processes of the AMM will be presented here. |