![]() ![]() ![]() Here, status and future paths towards the large-scale production of such W w assemblies, including techniques for realizing feasible joints with Cu, steel, or W, are presented. Employing thin flexible W wires (W w) with a diameter of a few hundred µm can reduce mechanical stresses, and we demonstrated their crack resilience against transient loads within first proof of principle studies. The latter causes surface roughening, cracking, or even melting, which could drastically increase the erosion rate. The former causes thermal fatigue and potentially detachment between the plasma-facing material tungsten and the structural Cu-based materials (divertor) and steel (first wall). During the service life of plasma-facing components, they are exposed to cyclic stationary and transient thermal loads.
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