| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing for Energy Applications III
|
| Presentation Title |
Densification of Binder Jetted Tungsten through Chemical Vapor Infiltration for Fusion Energy Application |
| Author(s) |
John R. Echols, Amy Elliot, Yutai Katoh, Lauren Garrison |
| On-Site Speaker (Planned) |
John R. Echols |
| Abstract Scope |
The divertor of tokamak-style fusion reactors are typically tungsten and must remove extreme heat from the reactor core while not changing phase, degrading or activating significantly from high neutron doses, or sputtering into the plasma. Additive manufacturing (AM) has the potential to revolutionize divertor design by allowing the manufacture of novel geometries and bypassing difficulty in traditionally machining tungsten. In this work, we investigate densifying tungsten binder jetted (BJ) preforms through chemical vapor infiltration (CVI). After producing a sample with binder still in place, it was heated in a CVI chamber to remove the binder and achieve infiltration temperature. Gaseous WF6 and H2 were flowed over the sample, reacting to form W (which grows on the W surface) and HF (removed). Time, temperature, and gas flowrates were varied to optimize final sample density. Energy dispersive x-ray spectroscopy was performed to investigate microstructure and texture. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Nuclear Materials, Other |