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@ARTICLE{Terra:865898,
author = {Terra, A. and Sergienko, G. and Tokar, M. and Borodin, D.
and Dittmar, T. and Kreter, A. and Martynova, Y. and
Möller, S. and Rasiński, M. and Wirtz, M. and Loewenhoff,
Th. and Dorow-Gerspach, D. and Yuan, Y. and Brezinsek, S.
and Unterberg, B. and Linsmeier, Ch.},
title = {Μicro-{S}tructured {T}ungsten: an
{A}dvanced{P}plasma-{F}acing {M}aterial},
journal = {Nuclear materials and energy},
volume = {19},
issn = {2352-1791},
address = {Amsterdam [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2019-05175},
pages = {7 - 12},
year = {2019},
abstract = {A micro-structuring of the tungsten plasma-facing surface
can strongly reduce near surface thermal stresses induced by
ELM heat fluxes. This approach has been confirmed by
numerical simulations with the help of ANSYS software. For
experimental tests, two 10 × 10 mm2 samples of
micro-structured tungsten were manufactured. These consisted
of 2000 and 5000 vertically packed tungsten fibres with
dimensions of Ø240 µm × 2.4 mm and Ø150
µm × 2.4 mm, respectively. The 1.2 mm bottom parts
of the fibres are embedded in a copper matrix. The top parts
of the fibres have gaps about of 10 µm so they are not
touching each others. The top of all tungsten fibres was
electro-polished. A Nd:YAG laser with a pulse duration
1 ms and a pulse repetition frequency of 25 Hz was used
to simulate up to 105 ELM-like heat pulses. No damage on
either of the micro-structured tungsten samples were
observed. Neon plasma erosion rate and fuel retention of the
micro-structured tungsten samples were almost identical to
bulk tungsten samples.},
cin = {IEK-2 / IEK-4 / IEK-1},
ddc = {624},
cid = {I:(DE-Juel1)IEK-2-20101013 / I:(DE-Juel1)IEK-4-20101013 /
I:(DE-Juel1)IEK-1-20101013},
pnm = {174 - Plasma-Wall-Interaction (POF3-174)},
pid = {G:(DE-HGF)POF3-174},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000470746100002},
doi = {10.1016/j.nme.2019.02.007},
url = {https://juser.fz-juelich.de/record/865898},
}