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@ARTICLE{Litnovsky:891395,
author = {Litnovsky, Andrey and Schmitz, Janina and Klein, Felix and
De Lannoye, Karen and Weckauf, Sophie and Kreter, Arkadi and
Rasinski, Marcin and Coenen, Jan W. and Linsmeier, Christian
and Gonzalez-Julian, Jesus and Bram, Martin and Povstugar,
Ivan and Morgan, Thomas and Nguyen-Manh, Duc and Gilbert,
Mark and Sobieraj, Damian and Wróbel, Jan S.},
title = {{S}mart {T}ungsten-based {A}lloys for a {F}irst {W}all of
{DEMO}},
journal = {Fusion engineering and design},
volume = {159},
issn = {0920-3796},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2021-01484},
pages = {111742 -},
year = {2020},
abstract = {During an accident with loss-of-coolant and air ingress in
DEMO, the temperature of tungsten first wall cladding may
exceed 1000 °C and remain for months leading to tungsten
oxidation. The radioactive tungsten oxide can be mobilized
to the environment at rates of 10–150 kg per hour. Smart
tungsten-based alloys are under development to address this
issue. Alloys are aimed to function as pure tungsten during
regular plasma operation of DEMO. During an accident,
alloying elements will create a protective layer,
suppressing release of W oxide.Bulk smart alloys were
developed by using mechanical alloying and field-assisted
sintering technology. The mechanical alloying process was
optimized leading to an increased powder production by at
least 40 $\%.$ Smart alloys and tungsten were tested under a
variety of DEMO-relevant plasma conditions. Both materials
demonstrated similar sputtering resistance to deuterium
plasma. Under accident conditions, alloys feature a 40-fold
reduction of W release compared to that of pure tungsten.},
cin = {IEK-4 / IEK-1},
ddc = {530},
cid = {I:(DE-Juel1)IEK-4-20101013 / I:(DE-Juel1)IEK-1-20101013},
pnm = {134 - Plasma-Wand-Wechselwirkung (POF4-134)},
pid = {G:(DE-HGF)POF4-134},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000580835200012},
doi = {10.1016/j.fusengdes.2020.111742},
url = {https://juser.fz-juelich.de/record/891395},
}