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@ARTICLE{Gatzen:863292,
      author       = {Gatzen, Caren and Mack, Daniel Emil and Guillon, Olivier
                      and Vaßen, Robert},
      title        = {{S}urface roughening of {A}l 2 {O} 3 /{A}l 2 {O} 3 -ceramic
                      matrix composites by nanosecond laser ablation prior to
                      thermal spraying},
      journal      = {Journal of laser applications},
      volume       = {31},
      number       = {2},
      issn         = {1938-1387},
      address      = {Orlando, Fla.},
      publisher    = {Laser Inst. of America},
      reportid     = {FZJ-2019-03379},
      pages        = {022018 -},
      year         = {2019},
      abstract     = {Al2O3/Al2O3 ceramic matrix composites are candidate
                      materials for high-temperature applications such as gas
                      turbines. As water vapor corrosion of Al2O3/Al2O3-CMC
                      (ceramic matrix composite) is a major issue, the application
                      of suitable environmental barrier coatings is inevitable. An
                      important factor for coating adhesion, especially in thermal
                      spraying, is mechanical interlocking. Therefore, a rough
                      substrate surface is needed. Although it has been proven
                      that laser ablation is a suitable method for surface
                      preparation of metallic substrates, no studies on
                      Al2O3/Al2O3-CMCs are available. Therefore, the suitability
                      of surface preparation of an Al2O3/Al2O3-CMC by laser
                      ablation for use prior to atmospheric plasma spraying was
                      examined. The laser ablation threshold fluence for
                      Al2O3/Al2O3-CMC was determined. The effects of different
                      processing parameters on the surface were studied. Various
                      surface morphologies were obtained, such as cauliflower and
                      honeycomb structures. The samples were characterized by
                      white light interferometry, laser microscopy, and scanning
                      electron microscopy. The obtained surface structures were
                      coated with Gd2Zr2O7. It was found that the adhesion
                      strength of coatings on laser treated samples was
                      drastically increased.},
      cin          = {IEK-1 / JARA-ENERGY},
      ddc          = {530},
      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:000484435200019},
      doi          = {10.2351/1.5080546},
      url          = {https://juser.fz-juelich.de/record/863292},
}