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@ARTICLE{Wolf:894261,
      author       = {Wolf, Markus and Mack, Daniel Emil and Mauer, Georg and
                      Guillon, Olivier and Vaßen, Robert},
      title        = {{C}rystalline ytterbium disilicate environmental barrier
                      coatings made by high velocity oxygen fuel spraying},
      journal      = {International journal of applied ceramic technology},
      volume       = {19},
      number       = {1},
      issn         = {1744-7402},
      address      = {Oxford [u.a.]},
      publisher    = {Wiley-Blackwell},
      reportid     = {FZJ-2021-03136},
      pages        = {210-220},
      year         = {2022},
      abstract     = {Dense environmental barrier coatings (EBCs) are an
                      essential prerequisite to exploit the advantages offered by
                      SiC-based fiber reinforced ceramic matrix composites (CMCs)
                      to increase efficiency in gas turbines. Today's state-of-the
                      art materials for application as EBCs are rare-earth (RE)
                      silicates which, however, form amorphous phases upon rapid
                      quenching from the melt. This makes their processing by
                      thermal spray a challenge. Recently, high velocity oxygen
                      fuel (HVOF) spraying was proposed as potential solution
                      since the melting degree of the feedstock can be controlled
                      effectively. This work studies the deposition of ytterbium
                      disilicate (YbDS) at short stand-off distances and variant
                      total feed rates and oxy-fuel ratios of the working gas. It
                      was found that the overall degree of crystallinity could be
                      kept at high level above $90\%.$ The kinetic energy
                      transferred by impinging particles was found to be an
                      effective parameter to control the densification of the
                      coatings. Porosities well below $10\%$ were achieved while
                      fully dense coatings were impeded due to the progressive
                      accumulation of stresses in the coatings.},
      cin          = {IEK-1 / JARA-ENERGY},
      ddc          = {670},
      cid          = {I:(DE-Juel1)IEK-1-20101013 / $I:(DE-82)080011_20140620$},
      pnm          = {1241 - Gas turbines (POF4-124)},
      pid          = {G:(DE-HGF)POF4-1241},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000677874500001},
      doi          = {10.1111/ijac.13829},
      url          = {https://juser.fz-juelich.de/record/894261},
}