Optimization of Additively Manufactured Plasma-facing Surfaces with Consideration of Plasma Infusion Effects
Abstract
While volumetrically complex materials (VCMs) have shown to be robust when exposed to plasma-facing environments, this study seeks to examine the performance of additively manufactured VCMs and investigate their capability to volumetrically conduct current. This research builds upon advanced ion-solid interaction simulation codes and optimization algorithms to determine optimal VCM designs that seek to minimize sputtering erosion. Optimized VCM geometries have demonstrated a reduction in sputter yield by approximately 80%; these complex designs have been realized only through the advanced capabilities of the additive manufacturing process. This research also seeks to understand the transport mechanisms of electrical current through VCMs, a critical factor for determining the current-bearing capacity of high-power cathodes. This investigation underlines the potential of VCMs to bolster durability in applications such as nuclear fusion, plasma electrodes, and space propulsion, thereby pushing the boundaries of current technological capabilities.
This work was supported by DOE Award DE-AR0001378 ``AMPERE'', and the University of California, Los Angeles department of Mechanical and Aerospace engineering.- Publication:
-
APS Division of Plasma Physics Meeting Abstracts
- Pub Date:
- 2023
- Bibcode:
- 2023APS..DPPPP1132S