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@INPROCEEDINGS{Vassen:884757,
      author       = {Vassen, Robert},
      title        = {{A}dvanced coating technologies for thermal barrier
                      coatings in gas turbines},
      reportid     = {FZJ-2020-03239},
      year         = {2020},
      abstract     = {In modern gas turbines, both for stationary and aero
                      applications, thermal barrier coatings (TBCs) are essential
                      to guarantee high efficiency and durability. A frequently
                      used deposition technology is thermal spray which offers the
                      possibility to manufacture a wide range of different
                      microstructures. In addition to the well-established
                      atmospheric plasma spraying (APS), new technologies, which
                      allow columnar architectures and hence high strain tolerance
                      similar to EB-PVD type coatings, attract a lot of interest.
                      The presentation will show results for coatings made by
                      suspension plasma spraying (SPS) and plasma spray physical
                      vapor deposition (PS-PVD) and compare these with APS
                      coatings.In addition to the deposition technology also the
                      coating material is studied intensively. Yttria stabilized
                      zirconia (YSZ) is still the state of the art material
                      although it is stated, that its long-term operation
                      temperature is limited to 1200°C. Here an overview is given
                      with respect to new TBC materials and also the temperature
                      capability of YSZ.Recently, the use of ceramic matrix
                      composites (CMCs) as structural materials in gas turbines is
                      of increasing importance. Also these materials need
                      protective coatings due to their susceptibility against
                      water vapor corrosion. These so-called environmental barrier
                      coatings (EBCs) are typically produced by thermal spray,
                      mainly APS. Here recent developments are shown.Finally, the
                      attack by CaMgAl-silicate (CMAS, the major constituent of
                      volcanic ash), a severe degradation mechanism especially in
                      aero engines, will be discussed. Results of the degradation
                      in a gradient test facility of standard APS TBCs but also
                      other advanced coatings will be presented.},
      month         = {Sep},
      date          = {2020-09-22},
      organization  = {MSE 2020 - Materials Science and
                       Engineering, Darmstadt/ Web-Konferenz
                       (Germany), 22 Sep 2020 - 25 Sep 2020},
      subtyp        = {Plenary/Keynote},
      cin          = {IEK-1},
      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)6},
      url          = {https://juser.fz-juelich.de/record/884757},
}