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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 Schwalenberg^1,3, Jan W. Coenen¹, Johann Riesch², Leonard Raumann¹, Yiran Mao¹, Alexis Terra¹, Till Höschen², Rudolf Neu^2,3, 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.