| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials Processing and Kinetic Phenomena: From Thin Films and Micro/Nano Systems to Advanced Manufacturing
|
| Presentation Title |
Combinatorial Approach to Develop Sputter-deposited High-entropy Alloy Films for Inertial Confinement Fusion Applications |
| Author(s) |
Eunjeong Kim, Alison M. Engwall, Gregory Vincent Taylor, Swanee J. Shin, Alexander A. Baker, James Barrett Merlo, Liam Robert Sohngen, David J. Strozzi, Brandon Joseph Bocklund, Emily Elaine Moore, Scott Michael Peters, Aurelien Pierre Philippe Perron, Sergei O. Kucheyev, Leonardus Bimo Bayu Aji |
| On-Site Speaker (Planned) |
Eunjeong Kim |
| Abstract Scope |
After the breakthrough demonstration of inertial confinement fusion (ICF) ignition in December 2022, the next goal is to increase the fusion energy yield to tens of megajoules. To achieve this goal, a new generation of hohlraums may be required. Hohlraums are centimeter-scale sphero-cylindrical cans made from heavy metals with a thickness of >10 µm. Hohlraums are typically fabricated by magnetron sputtering. They must balance design constraints, including x-ray conversion efficiency, mechanical and corrosion stability, and electrical resistivity. Here, we present results of our systematic study by combinatorial magnetron co-sputtering, aimed at developing a family of Au-Ta-W-Pt, Au-Ta-W-Bi, Au-Ta-Pt-Bi, Au-W-Pt-Bi, and Ta-W-Pt-Bi films. Effects of the alloy composition and deposition process parameters on the microstructure, residual stress, mechanical properties, and electrical transport will be considered, as well as implications for ICF applications. This work was performed under the auspices of the U.S. DOE by LLNL under Contract DE-AC52-07NA27344. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Characterization, |