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@ARTICLE{Vaen:866784,
      author       = {Vaßen, Robert and Bakan, Emine and Gatzen, Caren and Kim,
                      Seongwong and Mack, Daniel Emil and Guillon, Olivier},
      title        = {{E}nvironmental {B}arrier {C}oatings {M}ade by {D}ifferent
                      {T}hermal {S}pray {T}echnologies},
      journal      = {Coatings},
      volume       = {9},
      number       = {12},
      issn         = {2079-6412},
      address      = {Basel},
      publisher    = {MDPI},
      reportid     = {FZJ-2019-05850},
      pages        = {784 -},
      year         = {2019},
      abstract     = {Environmental barrier coatings (EBCs) are essential to
                      protect ceramic matrix composites against water vapor
                      recession in typical gas turbine environments. Both oxide
                      and non-oxide-based ceramic matrix composites (CMCs) need
                      such coatings as they show only a limited stability. As the
                      thermal expansion coefficients are quite different between
                      the two CMCs, the suitable EBC materials for both
                      applications are different. In the paper examples of EBCs
                      for both types of CMCs are presented. In case of EBCs for
                      oxide-based CMCs, the limited strength of the CMC leads to
                      damage of the surface if standard grit-blasting techniques
                      are used. Only in the case of oxide-based CMCs different
                      processes as laser ablation have been used to optimize the
                      surface topography. Another result for many EBCs for
                      oxide-based CMC is the possibility to deposit them by
                      standard atmospheric plasma spraying (APS) as crystalline
                      coatings. Hence, in case of these coatings only the APS
                      process will be described. For the EBCs for non-oxide CMCs
                      the state-of-the-art materials are rare earth or yttrium
                      silicates. Here the major challenge is to obtain dense and
                      crystalline coatings. While for the Y2SiO5 a promising
                      microstructure could be obtained by a heat-treatment of an
                      APS coating, this was not the case for Yb2Si2O7. Here also
                      other thermal spray processes as high velocity oxygen fuel
                      (HVOF), suspension plasma spraying (SPS), and very
                      low-pressure plasma spraying (VLPPS) are used and the
                      results described mainly with respect to crystallinity and
                      porosity},
      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:000506682800013},
      doi          = {10.3390/coatings9120784},
      url          = {https://juser.fz-juelich.de/record/866784},
}