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@ARTICLE{Nowak:173270,
      author       = {Nowak, Wojciech and Naumenko, Dmitry and Mor, G. and Mor,
                      F. and Mack, Daniel Emil and Vassen, Robert and Singheiser,
                      Lorenz},
      title        = {{E}ffect of {P}rocessing {P}arameters on {MC}r{A}l{Y}
                      {B}ondcoat {R}oughness and {L}ifetime of {APS}-{TBC}
                      {S}ystems},
      journal      = {Surface and coatings technology},
      volume       = {260},
      issn         = {0257-8972},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2014-06681},
      pages        = {82-89},
      year         = {2014},
      abstract     = {In the present work it is shown that the lifetime of air
                      plasma sprayed thermal barrier coatings systems with high
                      velocity oxyfuel bondcoats can be substantially extended by
                      application of a thin air plasma sprayed “flashcoat”
                      layer onto the base, high velocity oxyfuel bondcoat. This
                      approach allows improvement of the bondcoat roughness
                      profile to the extent typically obtained by optimized vacuum
                      plasma spraying. The oxidation resistance of the flashcoat
                      strongly depends on the spray parameters used. Deviation
                      from the set of the optimized spray parameters was found to
                      result in early catastrophic oxidation of the flashcoat and
                      corresponding very rapid thermal barrier coating-failure. In
                      order to explain the thermal barrier coating lifetime
                      variations between the various bondcoat morphologies, the
                      roughness profiles of high velocity oxyfuel, vacuum plasma
                      sprayed and air plasma sprayed bondcoats were evaluated
                      using fractal analysis. It is suggested that such an
                      approach provides better correlation between the bondcoat
                      morphology and thermal barrier coating-lifetime than the
                      calculation of the arithmetic mean roughness (Ra) of the
                      bondcoat frequently used in industrial practice.},
      cin          = {IEK-2 / IEK-1},
      ddc          = {620},
      cid          = {I:(DE-Juel1)IEK-2-20101013 / I:(DE-Juel1)IEK-1-20101013},
      pnm          = {122 - Power Plants (POF2-122)},
      pid          = {G:(DE-HGF)POF2-122},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000347584300014},
      doi          = {10.1016/j.surfcoat.2014.06.075},
      url          = {https://juser.fz-juelich.de/record/173270},
}