0616718 - ÚFP 2025 RIV NL eng J - Journal Article
Dejarnac, Renaud - Matějíček, Jiří - Greuner, H. - Böswirth, B. - Gerardin, Jonathan - Kopeček, Jaromír - Kirhetov, Daniil
Qualification by HHF tests of W coatings on Inconel superalloy for COMPASS-U plasma-facing components.
Nuclear Materials and Energy. Roč. 42, March (2025), č. článku 101841. E-ISSN 2352-1791
R&D Projects: GA MŠMT(CZ) LM2023045; GA MŠMT(CZ) EF16_019/0000768
Institutional support: RVO:61389021 ; RVO:68378271
Keywords : COMPASS-U * PFCs * tungsten
OECD category: Materials engineering; Materials engineering (FZU-D)
Impact factor: 2.3, year: 2023 ; AIS: 0.704, rok: 2023
Method of publishing: Open access
Result website:
https://www.sciencedirect.com/science/article/pii/S2352179124002643?via%3DihubDOI: https://doi.org/10.1016/j.nme.2024.101841

Coating Inconel tiles by tungsten is a necessary step towards the full tungsten first wall coverage of the COMPASS-U tokamak. Thin tungsten coatings on Inconel based on physical vapor deposition were successfully produced consequently to a programme of R&D within the COMPASS Upgrade project by three different suppliers. This contribution presents the qualification phase of these tungsten coatings under COMPASS-U relevant high heat fluxes (50 cycles at 10 MW/m2, 100 cycles at 30 MW/m2) in the neutral beam test facility GLADIS. The behavior of the different tungsten coatings during exposures and the main conclusions from the post-mortem analysis are presented. The most important result is that under COMPASS-U relevant heat fluxes, no damage was observed on the front face of all samples, proving the practicability of such coatings for fusion application.
Permanent Link: https://hdl.handle.net/11104/0363701