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@ARTICLE{Frommherz:280237,
      author       = {Frommherz, Martin and Scholz, Alfred and Oechsner, Matthias
                      and Bakan, Emine and Vassen, Robert},
      title        = {{G}adolinium zirconate/{YSZ} thermal barrier coatings:
                      {M}ixed-mode interfacial fracture toughness and sintering
                      behavior},
      journal      = {Surface and coatings technology},
      volume       = {286},
      issn         = {0257-8972},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2016-00044},
      pages        = {119 - 128},
      year         = {2016},
      abstract     = {In this work, the delamination toughness and the sintering
                      behavior of modern double-layer thermal barrier coatings of
                      type gadolinium zirconate (GZO)/yttrium-stabilized zirconia
                      (YSZ) are investigated in detail. These properties mainly
                      determine the strain tolerance and thus the performance of
                      thermal barrier coatings (TBCs). The delamination toughness
                      was determined using a modified four-point bending setup. It
                      is shown that the delamination behavior differs
                      significantly from conventional monolayer coatings and is
                      highly dependent on the specific microstructure of the GZO
                      layer. The stiffness and sintering behavior of freestanding
                      GZO layers were determined using impulse excitation, a test
                      method sensitive to the global stiffness of the ceramic
                      coating. The increase in stiffness is thereby correlated to
                      microstructural changes, explicitly the healing of
                      micro-cracks and the sintering of inter-lamellar cracks and
                      unmolten particles. The results reveal that the specific
                      spray structure of GZO has a great influence on the sinter
                      stability which results in a characteristic temperature
                      dependency. In this case the GZO coatings have an advantage
                      in comparison to conventional YSZ coatings attemperatures
                      above 1300 °C.},
      cin          = {IEK-1},
      ddc          = {620},
      cid          = {I:(DE-Juel1)IEK-1-20101013},
      pnm          = {113 - Methods and Concepts for Material Development
                      (POF3-113) / HITEC - Helmholtz Interdisciplinary Doctoral
                      Training in Energy and Climate Research (HITEC)
                      (HITEC-20170406)},
      pid          = {G:(DE-HGF)POF3-113 / G:(DE-Juel1)HITEC-20170406},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000368965300015},
      doi          = {10.1016/j.surfcoat.2015.12.012},
      url          = {https://juser.fz-juelich.de/record/280237},
}