Hannover 2020 – wissenschaftliches Programm
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P: Fachverband Plasmaphysik
P 5: Poster Session 1
P 5.27: Poster
Montag, 9. März 2020, 16:30–18:30, Empore Lichthof
Production and characterisation of tungsten fiber-reinfoced tungsten (Wf/W) — •Daniel Schwalenberg1,3, Jan W. Coenen1, Johann Riesch2, Leonard Raumann1, Yiran Mao1, Alexis Terra1, Till Höschen2, Rudolf Neu2,3, and Christian Linsmeier1 — 1Institut für Energie und Klimaforschung, Forschungszentrum Jülich GmbH, 52425 Jülich — 2Max-Plank-Institut für Plasmaphysik, 85748 Garching bei München — 3Technische Universität München, 85748 Garching bei München
The divertor of a fusion reactor is used for power and particle exhaust. Extreme conditions are expected in this area, leading to very high demands for material properties. Tungsten (W) satisfies many aspects of the requirements, e.g. excellent thermal properties, high sputter resistance and low hydrogen retention, but lacks mechanical robustness due to its brittleness. To improve the mechanical properties, a fibre reinforced composite material (Wf/W) has been developed. The material consists of ductile W fibres und and a brittle CVD matrix creating a pseudo-ductile behaviour, which prevents the material from failing catastrophically. In order to further characterise the material, larger amounts of Wf/W are being produced. These larger samples will be fabricated with the newly designed setups for chemical vapour deposition. As part of the qualification process of the material, the samples will undergo high heat flux tests at the ion beam facility GLADIS.