Qualification of W heavy alloys as plasma facing material

B. Böswirth, H. Greuner, S. Elgeti, T. Höschen, K. Hunger, H. Maier, R. Neu

Research output: Contribution to journalArticlepeer-review

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Highly loaded divertor regions in fusion experiments are exposed to high particle and power fluxes. Therefore, tungsten with its excellent thermal and physical properties is a preferred plasma facing material for this application. For divertor areas with moderate steady-state heat flux up to 10 MW/m2 the excellent high-temperature resistance of W is not absolutely necessary. 95–97 % W heavy alloys containing Ni, Cu or Fe could be used from the aspects of plasma wall interaction and their thermomechanical properties. In this study we present results of thermo-mechanical characterisations like measurement of thermal conductivity and tensile tests at elevated temperatures as well as results of high heat flux performance tests at adiabatic and steady-state loading. Finally, we discuss results of deuterium retention measurements.

Original languageEnglish
Article number101563
JournalNuclear Materials and Energy
StatePublished - Mar 2024


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