About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
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Tackling Structural Materials Challenges for Advanced Nuclear Reactors
|
Presentation Title |
Electrodeposition of Functionally Graded Interlayers for Enhanced Divertor/Heatsink Bonding for Fusion Reactors |
Author(s) |
Holly Garich, Katherine J Lee, Brian Skinn |
On-Site Speaker (Planned) |
Holly Garich |
Abstract Scope |
Energy-positive fusion reactors require the development of divertor modules at the bottom of the vacuum vessel to extract heat and ash produced by the fusion reaction, minimize plasma contamination, and protect the walls from thermal/neutronic loads. Functionally graded interlayers are investigated to provide improved thermomechanical properties to handle the anticipated heat flux from the fusion plasma to heatsinks joined to the tungsten plasma-facing components. Specifically, functionally-graded bonding interlayers, consisting of either tungsten-included copper composite or iron/tungsten alloy are designed to afford high and low tungsten concentrations near the plasma-facing component- and heatsink-facing surfaces, respectively. Pulsed electrodeposition enables these functionally graded interlayers to provide smooth gradients in the coefficient of thermal expansion, facilitating strong brazed joints between plasma-facing and heatsink components. This work presents data on the preparation and performance of functionally graded bonding interlayers by the pulse deposition method. |