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@ARTICLE{Terra:875311,
author = {Terra, Alexis and Sergienko, Gennady and Gago, Mauricio and
Kreter, Arkadi and Martynova, Y. and Rasinski, Marcin and
Wirtz, Marius and Loewenhoff, Thorsten and Mao, Yiran and
Schwalenberg, Daniel and Raumann, Leonard and Coenen, Jan
Willem and Möller, Sören and Koppitz, Thomas and
Dorow-Gerspach, Daniel and Brezinsek, Sebastijan and
Unterberg, Bernhard and Linsmeier, Christian},
title = {{M}icro-structuring of tungsten for mitigation of
{ELM}-like fatigue},
journal = {Physica scripta},
volume = {T171},
issn = {1402-4896},
address = {Stockholm},
publisher = {The Royal Swedish Academy of Sciences},
reportid = {FZJ-2020-01942},
pages = {014045},
year = {2020},
abstract = {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},
cin = {IEK-2 / IEK-4 / IEK-1 / ZEA-1},
ddc = {530},
cid = {I:(DE-Juel1)IEK-2-20101013 / I:(DE-Juel1)IEK-4-20101013 /
I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)ZEA-1-20090406},
pnm = {113 - Methods and Concepts for Material Development
(POF3-113)},
pid = {G:(DE-HGF)POF3-113},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000520000600045},
doi = {10.1088/1402-4896/ab4e33},
url = {https://juser.fz-juelich.de/record/875311},
}