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@PHDTHESIS{Lodato:29352,
      author       = {Lodato, Alessandra},
      title        = {{A}ssessment of beryllium as a plasma-facing material for
                      next step fusion devices},
      volume       = {3908},
      issn         = {0944-2952},
      school       = {Techn. Hochsch. Aachen},
      type         = {Dr. (FH)},
      address      = {Jülich},
      publisher    = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
      reportid     = {PreJuSER-29352, Juel-3908},
      series       = {Berichte des Forschungszentrums Jülich},
      pages        = {158 p.},
      year         = {2001},
      note         = {Record converted from VDB: 12.11.2012; Aachen, Techn.
                      Hochsch., Diss, 2001},
      abstract     = {The selection of the armour materials for the plasma facing
                      components (PFC) was one of the important challenging
                      problems in the design of the International Thermonuclear
                      Experimental Reactor (ITER). The working conditions of the
                      plasma facing materials (PFM) are very complex. During
                      normal operation they are subjected to high cyclic heat
                      fluxes which originate thermal fatigue and simultaneously to
                      high particle fluxes which produce erosion. During off
                      normal operations the PFMs may suffer severe thermal shocks
                      caused by plasma disruptions and by vertical displacement
                      events of the plasma. Beside carbon material and tungsten,
                      beryllium will play an important role as PFM in ITER. For
                      the construction of PFCs the beryllium tiles have to be
                      attached to a heat sink of copper. Several techniques of
                      joining such as brazing and hot isostatic pressing are under
                      consideration. During the operation of HER the PFMs will
                      suffer irradiation with 14 MeV neutrons generated in the
                      fusion process. This irradiation will affect the thermal and
                      mechanical properties of beryllium and beryllium-copper
                      joints. To validate the choice of the reference beryllium
                      grade and Be/Cu joint, there is a need to investigate their
                      behaviour under combined exposure to thermal loading and
                      neutron irradiation. To investigate the materials
                      degradation processes, thermal shock samples from different
                      beryllium grades, actively cooled Be/CuCrZr mock-ups and
                      mechanical test samples have been neutron irradiated in the
                      High Flux Reactor at Petten, The Netherlands. In the present
                      work the experimental assessment of neutron irradiation
                      effects on Be material has been carried out by performing
                      thermal shock tests on beryllium samples of different
                      grades. The thermal shock behaviour of the different
                      beryllium grades before and after neutron irradiation has
                      been compared. Furthermore, the experimental verification of
                      neutron damage on Be/Cu joints has been achieved by
                      performing thermal fatigue tests on beryllium-copper
                      mock-ups. The heat removal efficiency and the thermal
                      fatigue behaviour of mock-ups with CuMnSnCe braze and with
                      InCuSil braze before and after neutron irradiation have been
                      compared.},
      cin          = {IWV-2},
      cid          = {I:(DE-Juel1)VDB2},
      pnm          = {Verbundwerkstoffe für thermisch hoch beanspruchte
                      Komponenten},
      pid          = {G:(DE-Juel1)FUEK23},
      typ          = {PUB:(DE-HGF)11 / PUB:(DE-HGF)3},
      url          = {https://juser.fz-juelich.de/record/29352},
}