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@ARTICLE{Wolf:877858,
      author       = {Wolf, Markus and Mack, Daniel Emil and Guillon, Olivier and
                      Vaßen, Robert},
      title        = {{R}esistance of pure and mixed rare earth silicates against
                      calcium‐magnesium‐aluminosilicate ({CMAS}): {A}
                      comparative study},
      journal      = {Journal of the American Ceramic Society},
      volume       = {103},
      number       = {12},
      issn         = {1551-2916},
      address      = {Westerville, Ohio},
      publisher    = {Soc.},
      reportid     = {FZJ-2020-02479},
      pages        = {7056-7071},
      year         = {2020},
      abstract     = {Rare earth silicate environmental barrier coatings (EBCs)
                      are state of the art for protecting SiC ceramic matrix
                      composites (CMCs) against corrosive media. The interaction
                      of four pure rare earth silicate EBC materials Yb2SiO5,
                      Yb2Si2O7, Y2SiO5, Y2Si2O7 and three ytterbium silicate
                      mixtures with molten calcium‐magnesium‐aluminosilicate
                      (CMAS) were studied at high temperature (1400°C). The
                      samples were characterized by SEM and XRD in order to
                      evaluate the recession of the different materials after a
                      reaction time of 8 hours. Additionally, the coefficient of
                      thermal expansion (CTE) was determined to evaluate the
                      suitability of Yb silicate mixtures as EBC materials for SiC
                      CMCs. Results show that monosilicates exhibit a lower
                      recession in contact with CMAS than their disilicate
                      counterparts. The recession of the ytterbium silicates is
                      far lower than the recession of the yttrium silicates under
                      CMAS attack. Investigation of the ytterbium silicate
                      mixtures exposes their superior resistance to CMAS, which is
                      even higher than the resistance of the pure monosilicate.
                      Also their decreased CTE suggests they will display better
                      performance than the pure monosilicate.},
      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:000545078100001},
      doi          = {10.1111/jace.17328},
      url          = {https://juser.fz-juelich.de/record/877858},
}