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@ARTICLE{Back:874008,
      author       = {Back, Hyoung Chul and Gibmeier, Jens and Vaßen, Robert},
      title        = {{P}hase {T}ransformation-{I}nduced {C}hanges in
                      {M}icrostructure and {R}esidual {S}tresses in {T}hermally
                      {S}prayed {M}n{C}o{F}e{O}4 {P}rotective {C}oatings},
      journal      = {Journal of thermal spray technology},
      volume       = {29},
      issn         = {1544-1016},
      address      = {Boston, Mass.},
      publisher    = {Springer},
      reportid     = {FZJ-2020-01168},
      pages        = {1242–1255},
      year         = {2020},
      abstract     = {The contribution comprises the investigation of the
                      microstructure and residual stresses in thermally sprayed
                      Mn1.0Co1.9Fe0.1O4.0 (MCF) protective coatings for
                      interconnectors of SOFC stacks, deposited on ferritic steel
                      Crofer 22 APU via atmospheric plasma spraying (APS). The
                      coatings are designated to prevent Cr evaporation during
                      high operation temperature of the SOFCs. The local
                      microstructure, pore distributions and pore shapes, phase
                      fractions, micro-hardness, Youngs’ modulus and residual
                      stresses through the coating thickness were characterized in
                      as-sprayed state and compared with longtime (10-100 h)
                      heat-treated samples (700 and 850 °C). The results show
                      that the long-term thermal aging treatment causes a
                      successive high sintering of the coatings characterized by a
                      reduction in pore density, by phase transformation from the
                      metastable rock salt structure that gradually transformed to
                      a spinel structure and by a slight relaxation of the
                      process-induced tensile residual stresses in the coating.
                      For SOFC application of the MCF coating, this indicates an
                      improvement in the coatings integrity. During operation, a
                      self-repair proceeds leading to dense and gas-proof
                      coatings, while the mechanical properties are mainly
                      retained.},
      cin          = {IEK-1},
      ddc          = {670},
      cid          = {I:(DE-Juel1)IEK-1-20101013},
      pnm          = {113 - Methods and Concepts for Material Development
                      (POF3-113)},
      pid          = {G:(DE-HGF)POF3-113},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000516352400001},
      doi          = {10.1007/s11666-020-00997-9},
      url          = {https://juser.fz-juelich.de/record/874008},
}