| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing and Innovative Powder/Wire Processing of Multifunctional Materials
|
| Presentation Title |
Innovative Additive Manufacturing of MOF-Based, Bulk Metallic Hydrides for Advanced Fission Power Systems |
| Author(s) |
Tim F. DeFranco, Kevin G Field |
| On-Site Speaker (Planned) |
Tim F. DeFranco |
| Abstract Scope |
This study introduces a cost-effective additive manufacturing toolset/process for producing large-scale metallic hydride structures in compact advanced fission power systems. Utilizing a consumer-grade FDM printer with a custom LDM extruder, we extrude a Carboxymethylcellulose (CMC)-based, stainless-steel metal-organic framework (MOF) as a stand-in for yttrium. Twelve CMC-MOFs were synthesized through a statistical simplex-lattice mixture design and an eco-friendly sol-gel approach, considering constituent components and analyzing critical responses like swelling behavior, printability, and rheological/mechanical properties. Seeking moderate swell-ability and preferable printability led to down-selection within the CMC/crosslinking agent-rich design space. Percent swelling changes ranged from 100-1298%, with sample CB0006 showing the most balanced properties. Post-extrusion structures underwent drying, de-binding, and sintering, and a planned dual sintering/hydriding step to help mitigate cracking commonly seen in bulk hydride fabrication. This technique enables resource-scarce production while simultaneously enabling the complex shapes necessary for advanced reactor designs, leveraging yttrium hydride’s neutron moderation efficiency and thermal stability. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Nuclear Materials, Other |