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@INPROCEEDINGS{Krug:888134,
      author       = {Krug, Robert and Möller, Sören and S, Antusch and
                      Rasinski, Marcin and Kreter, Arkadi and Wirtz, Marius and
                      Unterberg, Bernhard},
      title        = {{D}euterium {R}etention and {S}urface {M}odification of
                      {T}ungsten {A}lloys produced by {P}owder {I}njection
                      {M}oulding after {D}euterium {P}lasma {E}xposure},
      reportid     = {FZJ-2020-04708},
      year         = {2020},
      abstract     = {Deuterium Retention and Surface Modification of
                      TungstenAlloys produced by Powder Injection Moulding
                      afterDeuterium Plasma ExposureRobert Krug1∗, Sören
                      Möller1, Steffen Antusch2, Marcin Rasinki1,Arkadi Kreter1,
                      Marius Wirtz1, Bernhard Unterberg11) Forschungszentrum
                      Jülich, Institut für Energie- und Klimaforschung, 52425
                      Jülich,Germany2) Karlsruhe Institute of Technology,
                      Institute for Applied Materials, P.O. Box 3640,76021
                      Karlsruhe∗r.krug@fz-juelich.deKeywords: Powder Injection
                      Moulding, Tungsten, Deuterium Retention, SputteringTopic:
                      Plasma-Facing ComponentsType of Submission: TalkPowder
                      Injection Moulding (PIM) is a promising technique for
                      altering materialproperties of tungsten as a first wall
                      material for nuclear fusion through dopingwith different
                      elements (e.g. titanium carbide) and mass-producing complex
                      shapedparts.The resulting changes in microstructure improve
                      the mechanical properties, but canhave effects on the plasma
                      behaviour like erosion and fuel retention as well.
                      Inpreliminary studies it was determined, that especially
                      preferential sputtering of thealloying particles and the
                      plasma interaction with the carbon based binder have themost
                      impact on the plasma behaviour of PIM tungsten alloys.In
                      this work, we investigate the behaviour of the surface near
                      region (first fewμm)of 6 different PIM produced tungsten
                      alloys under deuterium plasma exposure. Forthis, the samples
                      are exposed to a deuterium plasma with a total fluence
                      of≈5×1025m−2s−1at a temperature of200◦Cin the
                      linear plasma device PSI-2.The surface modifications due to
                      the plasma are investigated by Focussed Ion Beamand Scanning
                      Electron Microscopy (FIB-SEM), the change in material
                      compositionby Secondary Ion Mass Spectrometry (SIMS) and the
                      deuterium depth concentrationin the first fewμmby Nuclear
                      Reaction Analysis (NRA)},
      month         = {Sep},
      date          = {2020-09-20},
      organization  = {31st Symposium on Fusion Technology
                       (SOFT 2020), Dubrovnik (Kroatien), 20
                       Sep 2020 - 25 Sep 2020},
      cin          = {IEK-4 / IEK-1},
      cid          = {I:(DE-Juel1)IEK-4-20101013 / I:(DE-Juel1)IEK-1-20101013},
      pnm          = {113 - Methods and Concepts for Material Development
                      (POF3-113)},
      pid          = {G:(DE-HGF)POF3-113},
      typ          = {PUB:(DE-HGF)1},
      url          = {https://juser.fz-juelich.de/record/888134},
}