Erlangen 2018 – wissenschaftliches Programm
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P: Fachverband Plasmaphysik
P 3: Plasma Wall Interactions I / Astrophysical Plasmas
P 3.5: Vortrag
Montag, 5. März 2018, 15:00–15:15, A 0.112
Experimental studies on tungsten produced by powder injection moulding as plasma-facing materials — •Robert Krug1, Bernhard Unterberg1, Steffen Antusch2, Jan-Peter Bähner1, Jan Willem Coenen1, Christoph Kaufmann1, Arkadi Kreter1, Yulia Martinova1, Sören Möller1, Gerald Pintsuk1, Marcin Rasinski1, Michael Rieth2, Marius Wirtz1, and Christian Linsmeier1 — 1Institut für Energie-und Klimaforschung, Forschungszentrum Jülich, 52425 Jülich, Germany — 2Karlsruhe Institute of Technology, Institute for Applied Materials, P.O. Box 3640, 76021 Karlsruhe
Tungsten is the plasma facing material for future fusion reactors. In this contribution, we report on plasma exposure of pure tungsten produced via Powder Injection Moulding in the linear plasma device PSI-2 using deuterium plasmas with a moderate plasma flux density.The sample temperature has been kept to 420-450∘ C. In addition, some samples have been exposed to transient heat loads ( 0.38 GWm−2). Reference W samples(Plansee) were exposed under the same conditions for comparison. Net erosion, surface roughness and the resulting fuel inventory have been measured. The surface morphology has been analyzed prior and after the exposure. We observe in all cases an enhanced erosion of the PIM material. The response of the material to the transient heat loads is similar for both samples. Fuel retention in PIM-W shows strong variation with the resiudal carbon content. For PIM-W samples with lowest carbon content fuel retention is comparable to that in reference samples.