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| Home > Publications database > Boron layer preparation, characterization and hydrogen isotope permeability for fusion application |
| Typ | Amount | VAT | Currency | Share | Status | Cost centre |
| APC | 1912.00 | 0.00 | EUR | 100.00 % | (Zahlung erfolgt) | ZB |
| Sum | 1912.00 | 0.00 | EUR | |||
| Total | 1912.00 |
| Journal Article | FZJ-2026-01554 |
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2025
Elsevier
Amsterdam [u.a.]
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Please use a persistent id in citations: doi:10.1016/j.nme.2025.102028 doi:10.34734/FZJ-2026-01554
Abstract: Due to the re-baseline of the fusion device ITER and the strategical decision to change from Be to W as first wall material, a boronization procedure has to be implemented into the wall conditioning phase. Since the functionality of boron layers in carbon free fusion devices is not understand in detail so far, this study aims to be a starting point of the investigation of boron layers for fusion applications.In the first step, pure boron coatings are prepared in a magnetron sputter deposition device on W and steel substrates. The homogeneity, crystal phase and composition is studied and it is proved that an amorphous, stable boron layer is obtained with this deposition procedure. No impurities, e.g. O, N, C, are detected and a deposition rate of 20 nm/h is reached. The coatings are temperature stable up to 1000 . No oxidation of the boron layer is detected when exposed to air, but a uptake of humidity is possible. Therefore, the samples should be stored in vacuum after deposition.The hydrogen isotope permeability is studied and a low layer permeability, which is four orders of magnitude lower as steel is found.In the future, the investigation will be broadened to mixed boron layers, e.g. B:D and B:W, which are more alike as boron layers in fusion devices, and these mixed layers will be compared to the pure boron layers as a next step.
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