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@ARTICLE{Vaen:884045,
      author       = {Vaßen, Robert and Mack, Daniel Emil and Tandler, Martin
                      and Sohn, Yoo Jung and Sebold, Doris and Guillon, Olivier},
      title        = {{U}nique performance of thermal barrier coatings made of
                      yttria stabilized zirconia at extreme temperatures $(\>$
                      1500°{C})},
      journal      = {Journal of the American Ceramic Society},
      volume       = {104},
      number       = {1},
      issn         = {1551-2916},
      address      = {Westerville, Ohio},
      publisher    = {Soc.},
      reportid     = {FZJ-2020-03065},
      pages        = {463-471},
      year         = {2021},
      abstract     = {Yttria stabilized zirconia (YSZ) has been for several
                      decades the state of the art material for thermal barrier
                      coating (TBC) applications in gas turbines. Although the
                      material has unique properties, further efficiency
                      improvement by increasing the temperature is limited due to
                      its maximum temperature capability of about 1200°C. Above
                      this temperature the deposited metastable tetragonal (t´)
                      phase undergoes a detrimental phase transformation as well
                      as enhanced sintering. Both processes promote the failure of
                      the coatings at elevated temperatures and this early failure
                      has been frequently observed in gradient tests. In this
                      paper we now experimentally shown for the first time that
                      under typical cycling conditions not the time at elevated
                      temperatures leads to the reduced lifetime but the transient
                      cooling rates. If cooling rates were reduced to 10K/s, TBC
                      systems could be operated in a burner rig at a surface
                      temperature well above 1500°C without showing a lifetime
                      reduction. The explanation of these astonishing findings is
                      given by the evaluation of energy release rate peaks during
                      fast transient cooling in combination with the phase
                      evolution during cooling with the used cooling rates.},
      cin          = {IEK-1 / JARA-ENERGY},
      ddc          = {660},
      cid          = {I:(DE-Juel1)IEK-1-20101013 / $I:(DE-82)080011_20140620$},
      pnm          = {113 - Methods and Concepts for Material Development
                      (POF3-113)},
      pid          = {G:(DE-HGF)POF3-113},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000572783300001},
      doi          = {10.1111/jace.17452},
      url          = {https://juser.fz-juelich.de/record/884045},
}