Home > Publications database > Micro-structuring of tungsten for mitigation of ELM-like fatigue > print

001     875311
005     20250701125857.0
024 7 _ |a 10.1088/1402-4896/ab4e33
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037 _ _ |a FZJ-2020-01942
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100 1 _ |a Terra, Alexis
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245 _ _ |a Micro-structuring of tungsten for mitigation of ELM-like fatigue
260 _ _ |a Stockholm
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|b The Royal Swedish Academy of Sciences
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520 _ _ |a Fusions reactors have to handle numerous specifications before being able to show viable commercial operation, one of which is to find a proper Plasma Facing Material (PFM) which can withstand the high heat loads of several tens of megawatts per square meters combined with the pulse operation of a tokamak and many other problematics (Brezinsek et al 2017 Nucl. Fusion 57 116041). Nowadays, only tungsten is considered as a PFM for high heat flux areas of a tokamak divertor. Tungsten has been selected due to its favorable physical properties, but tungsten has a major drawback: it is brittle under temperatures typically used for water-cooled plasma-facing components (PFC). Under these temperatures the damage threshold due to thermal fatigue induced by ELM is very low, which will dramatically reduce the life-time of the tungsten PFC. The ANSYS simulations and experiments with a millisecond pulsed laser demonstrate a strongly improved ability to withstand thermal fatigue by micro-structuring of the tungsten surface with the help of 150–240 μm diameter tungsten fibres
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700 1 _ |a Sergienko, Gennady
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700 1 _ |a Gago, Mauricio
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700 1 _ |a Kreter, Arkadi
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700 1 _ |a Martynova, Y.
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700 1 _ |a Rasinski, Marcin
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700 1 _ |a Wirtz, Marius
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700 1 _ |a Loewenhoff, Thorsten
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700 1 _ |a Mao, Yiran
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700 1 _ |a Schwalenberg, Daniel
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700 1 _ |a Raumann, Leonard
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700 1 _ |a Coenen, Jan Willem
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700 1 _ |a Möller, Sören
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700 1 _ |a Koppitz, Thomas
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700 1 _ |a Dorow-Gerspach, Daniel
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700 1 _ |a Brezinsek, Sebastijan
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700 1 _ |a Unterberg, Bernhard
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700 1 _ |a Linsmeier, Christian
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773 _ _ |a 10.1088/1402-4896/ab4e33
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856 4 _ |u https://juser.fz-juelich.de/record/875311/files/Terra_2020_Phys._Scr._2020_014045.pdf
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856 4 _ |y Published on 2020-03-06. Available in OpenAccess from 2021-03-06.
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