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@ARTICLE{Vaen:25009,
      author       = {Vaßen, R. and Simwonis, D. and Stöver, D.},
      title        = {{M}odelling of the agglomeration of {N}i-particles in
                      anodes of solid oxide fuel cells},
      journal      = {Journal of materials science},
      volume       = {36},
      issn         = {0022-2461},
      address      = {Dordrecht [u.a.]},
      publisher    = {Springer Science + Business Media B.V},
      reportid     = {PreJuSER-25009},
      pages        = {147 - 151},
      year         = {2001},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {The degradation of anodes of solid oxide fuel cells (SOFC),
                      which consist of a porous metal - solid electrolyte material
                      is described by a two particle model. The model is based on
                      two main assumptions. Firstly, the difference in metal
                      particle diameter is the driving force for the observed
                      coarsening of the larger metal particle during long term
                      annealing. Secondly, surface diffusion of metal atoms on the
                      particle surface is the dominant diffusion mechanism.
                      Additionally, a function was introduced which considers the
                      limited space for the growth of the nickel particles in the
                      cermet material. The found analytical function for the
                      growth kinetics was compared to experimental results for the
                      growth of nickel particles in a nickel - yttria stabilised
                      zirconia (YSZ) anode annealed at 1000 degreesC up to 4000 h.
                      The model describes the time dependence of the observed
                      particle radii in an adequate way. The resultant surface
                      diffusion coefficients for Ni are lower than results found
                      in literature. Possible explanations are discussed. However,
                      the result shows that the proposed mechanism - surface
                      diffusion of nickel atoms - is fast enough to explain the
                      found amount of Ni agglomeration in SOFC anodes and is
                      therefore considered to be the dominant mechanism. (C) 2001
                      Kluwer Academic Publishers.},
      keywords     = {J (WoSType)},
      cin          = {IWV-1},
      ddc          = {670},
      cid          = {I:(DE-Juel1)VDB5},
      pnm          = {Werkstoff- und Bauteilentwicklung für die
                      Hochtemperatur-Brennstoffzelle / SOFC - Solid Oxide Fuel
                      Cell (SOFC-20140602)},
      pid          = {G:(DE-Juel1)FUEK22 / G:(DE-Juel1)SOFC-20140602},
      shelfmark    = {Materials Science, Multidisciplinary},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000166422700019},
      doi          = {10.1023/A:1004849322160},
      url          = {https://juser.fz-juelich.de/record/25009},
}