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P: Fachverband Plasmaphysik
P 6: Plasma-surface interaction
P 6.6: Vortrag
Dienstag, 10. März 2020, 12:40–12:55, b302
Deuterium Retention and Surface Modification of Tungsten Alloys produced by Powder Injection Moulding after Deuterium Plasma Exposure — •Robert Krug1, Sören Möller1, Steffen Antusch2, Marcin Rasinsky1, Arkadi Kreter1, Marius Wirtz1, and Bernhard Unterberg1 — 1Forschungszentrum Jülich, Institut für Energie- und Klimaforschung,52425 Jülich, Germany — 2KarlsruheInstitute of Technology, Institute for Applied Materials, P.O. Box3640, 76021 Karlsruhe
In this work, we investigate the behaviour of the surface near region (first few µ m) of different PIM produced tungsten alloys under deuterium plasma exposure.
For this, the samples are exposed to a deuterium plasma with a total fluence of ≈ 5 · 1025 m−2s−1 at a temperature of 200∘ C in the linear plasma device PSI-2.
In preliminary studies it was determined, that especially preferential sputtering of the alloying particles and the plasma interaction with the carbon based binder have the most impact on the plasma behaviour of PIM alloy materials.
These surface modifications due to the plasma are investigated by Focussed Ion Beam and Scanning Electron Microscopy (FIB-SEM), the change in material composition by Secondary Ion Mass Spectrometry (SIMS) and the deuterium depth concentration in the first few µ m by Nuclear Reaction Analysis (NRA).