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@ARTICLE{GarciaFresnillo:824680,
      author       = {Garcia-Fresnillo, L. and Patel, R. and Niewolak, Leszek and
                      Quadakkers, W. J. and Hua, M. and Wang, Q. and Meier, G. H.},
      title        = {{O}xidation {B}ehaviour and {P}hase {T}ransformations of an
                      {I}nterconnect {M}aterial in {S}imulated {A}node
                      {E}nvironment of {I}ntermediate {T}emperature {S}olid
                      {O}xide {F}uel {C}ells},
      journal      = {Materials at high temperatures},
      volume       = {34},
      number       = {1},
      issn         = {1878-6413},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2016-07238},
      pages        = {61 - 77},
      year         = {2016},
      abstract     = {The oxidation behaviour and the phase transformations
                      associated with high temperature exposure of a commercial
                      ferritic interconnect steel, Crofer 22 H, was studied in a
                      simulated solid oxide fuel cell (SOFC) anode atmosphere at
                      700 °C. Special emphasis was placed on the formation of the
                      intermetallic sigma phase. No sigma phase was detected in
                      the bulk alloy after 500 h of exposure of bare specimens.
                      However, specimens which were pre-coated with a layer of
                      nickel showed formation of an interdiffusion zone after as
                      little as 2 h of exposure and sigma phase formation occurred
                      after 10 h. The presence of the nickel layer, which
                      simulates the contact between ferritic steel interconnects
                      and a nickel mesh in a SOFC results in the formation of an
                      austenitic zone and accelerated formation of a σ-phase rich
                      layer at the ferrite/austenite interface. The ferritic steel
                      is transformed into austenite due to the inward diffusion of
                      nickel, σ-phase started to nucleate at the transformed
                      austenite grain boundaries. The nucleation is enhanced by an
                      increased Cr/Fe-ratio at that interface due to more
                      pronounced diffusion of Fe, compared to Cr, in the direction
                      of the Ni-layer. Different possible mechanisms for the
                      nucleation and growth of σ-phase were identified. The
                      experimental results led to the conclusion that sigma
                      nucleates in the austenite and grows following an isothermal
                      eutectoid-like decomposition.},
      cin          = {IEK-2},
      ddc          = {620},
      cid          = {I:(DE-Juel1)IEK-2-20101013},
      pnm          = {135 - Fuel Cells (POF3-135)},
      pid          = {G:(DE-HGF)POF3-135},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000389473300008},
      doi          = {10.1080/09603409.2016.1244373},
      url          = {https://juser.fz-juelich.de/record/824680},
}