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@ARTICLE{Ananyev:202228,
      author       = {Ananyev, M. V. and Bronin, D. I. and Osinkin, D. A. and
                      Eremin, V. A. and Steinberger-Wilckens, R. and de Haart,
                      L.G.J. and Mertens, Josef},
      title        = {{C}haracterization of {N}i-cermet degradation phenomena
                      {I}. {L}ong termresistivity monitoring, image processing and
                      {X}-ray fluorescenceanalysis},
      journal      = {Journal of power sources},
      volume       = {286},
      issn         = {0378-7753},
      address      = {New York, NY [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2015-04517},
      pages        = {414 - 426},
      year         = {2015},
      abstract     = {The present paper is devoted to Ni-cermet degradation
                      phenomena and places emphasis on experimental approaches and
                      data handling. The resistivity of Ni-YSZ cermet (nickel and
                      8 $mol.\%$ yttria stabilized zirconia) anode substrates was
                      monitored during 3000 h at 700 and 800 °C in a gas mixture
                      of 80 $vol.\%$ water vapor and 20 $vol.\%$ hydrogen. The
                      experimentally evaluated dependence of resistivity of the
                      Ni-YSZ substrates can be well described by exponential decay
                      functions. Post test analysis by image processing and XRF
                      (X-ray fluorescence) analysis for characterization of the
                      microstructure and elemental composition were carried out
                      for virgin samples and after 300, 1000 and 3000 h of
                      exposure time. The 3D-microstructure was reconstructed using
                      an original spheres packing algorithm. Two processes leading
                      to the Ni-YSZ degradation were observed: Ni-phase particle
                      coarsening and volatilization. The effect of these processes
                      on resistivity and such microstructure parameters as
                      porosity, Ni-phase fraction, Ni and YSZ phases particle size
                      distributions, triple phase boundary length, and tortuosity
                      factor are considered in this paper.},
      cin          = {IEK-9},
      ddc          = {620},
      cid          = {I:(DE-Juel1)IEK-9-20110218},
      pnm          = {135 - Fuel Cells (POF3-135)},
      pid          = {G:(DE-HGF)POF3-135},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000355027400048},
      doi          = {10.1016/j.jpowsour.2015.03.168},
      url          = {https://juser.fz-juelich.de/record/202228},
}