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@INPROCEEDINGS{Spilker:835110,
      author       = {Spilker, Benjamin and Linke, Jochen and Wirtz, Marius},
      title        = {{S}urface {F}inish {I}nfluence on the {T}hermal {S}hock
                      {P}erformance of {B}eryllium},
      reportid     = {FZJ-2017-04978},
      year         = {2015},
      abstract     = {Beryllium with varying surface conditions is exposed to
                      fusion relevant transient heat pulses. The TGP-56FW
                      beryllium samples are ground with silicon carbide papers of
                      increasing grit designation from P80 to P320 to simulate the
                      industrial lathe cut surface conditions for the ITER first
                      wall armour tiles. Up to 1000 heat pulses with a pulse
                      duration of 1 ms and an absorbed power density of 800 MW/m²
                      are applied using the electron beam facility JUDITH 1 at
                      room temperature to test the thermal shock performance of
                      the target samples. Surface characterization and
                      metallographic cross sections show that the resulting
                      material damage is similar for all surface conditions. The
                      arithmetic mean roughness is increasing but the crack
                      parameters remain unchanged for all surface conditions in
                      the range of 100 to 1000 pulses. This study suggests that
                      there is no need for additional surface treatments such as
                      grinding of the industrial cut beryllium armour tiles to
                      improve the thermal shock resistance.},
      month         = {May},
      date          = {2015-05-04},
      organization  = {15th Annual Meeting on Nuclear
                       Technology, Berlin (Germany), 4 May
                       2015 - 7 May 2015},
      subtyp        = {After Call},
      cin          = {IEK-2},
      cid          = {I:(DE-Juel1)IEK-2-20101013},
      pnm          = {174 - Plasma-Wall-Interaction (POF3-174)},
      pid          = {G:(DE-HGF)POF3-174},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://juser.fz-juelich.de/record/835110},
}