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@ARTICLE{Chatzimichail:156421,
      author       = {Chatzimichail, R. and Triantafyllou, G. and Tietz, F. and
                      Nikolopoulos, P.},
      title        = {{I}nterfacial properties of ({A}g + {C}u{O}) brazes used
                      as sealing materials in {SOFC} stacks},
      journal      = {Journal of materials science},
      volume       = {49},
      number       = {1},
      issn         = {1573-4803},
      address      = {Dordrecht [u.a.]},
      publisher    = {Springer Science + Business Media B.V},
      reportid     = {FZJ-2014-05164},
      pages        = {300 - 313},
      year         = {2014},
      abstract     = {Ceramic insulation layers in combination with air braze
                      filler metals were investigated as material compositions
                      suitable for joining the metallic components in planar solid
                      oxide fuel cell stacks. This paper reports on a series of
                      wetting experiments for determination of the interfacial
                      properties of pure Ag and Ag + CuO brazes in contact with
                      the oxides MgO, MgAl2O4, Al2O3 and the mixture MgO +
                      MgAl2O4, as well as with ferritic steel at 1273 K. The
                      long-term stability of the ceramic/Ag + CuO/steel joints
                      after exposure for longer periods of time (1000 h) at 1073 K
                      is also assessed. The influence on joining of CuO additions
                      in the noble metal was investigated following two different
                      routes. The first one involved melting of Ag + 4 $wt\%$ CuO
                      brazes on the surface of solid substrates (ceramic, steel),
                      and the second one involved melting of pure Ag on the
                      substrates coated with a thin CuOx layer. No differences in
                      the values of the measured contact angles were observed.
                      Furthermore, it was found that the reactions taking place at
                      the interface braze/steel at the initial stage of brazing is
                      extended in the case of Ag + 4 $wt\%$ CuO during the
                      long-term exposure at envisaged operating temperature
                      limiting the stability of the joint.},
      cin          = {IEK-1},
      ddc          = {670},
      cid          = {I:(DE-Juel1)IEK-1-20101013},
      pnm          = {123 - Fuel Cells (POF2-123)},
      pid          = {G:(DE-HGF)POF2-123},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000328260200031},
      doi          = {10.1007/s10853-013-7706-x},
      url          = {https://juser.fz-juelich.de/record/156421},
}