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@ARTICLE{Ionescu:186614,
      author       = {Ionescu, Emanuel and Balan, Corneliu and Kleebe,
                      Hans-Joachim and Müller, Mathis M. and Guillon, Olivier and
                      Schliephake, Daniel and Heilmaier, Martin and Riedel, Ralf
                      and Sglavo, V.},
      title        = {{H}igh-{T}emperature {C}reep {B}ehavior of {S}i{OC} {G}lass
                      {C}eramics: {I}nfluence of {N}etwork {C}arbon {V}ersus
                      {S}egregated {C}arbon},
      journal      = {Journal of the American Ceramic Society},
      volume       = {97},
      number       = {12},
      issn         = {0002-7820},
      address      = {Oxford [u.a.]},
      publisher    = {Wiley-Blackwell},
      reportid     = {FZJ-2015-00687},
      pages        = {3935 - 3942},
      year         = {2014},
      abstract     = {Three silicon oxycarbide samples with different carbon
                      contents are analyzed in the present study with respect to
                      their high-temperature creep behavior. The tests were
                      performed in compression at 1100°C, 1200°C, and 1300°C;
                      in this temperature range the mechanism of creep relies on
                      viscoelastic flow within the samples and has been modeled
                      with the Jeffreys viscoelastic model. After the release of
                      the applied mechanical stress, a viscoelastic recovery
                      behavior was observed in all samples. The creep behavior of
                      the investigated samples indicates two rheological
                      contributions in SiOC: (i) a high viscous answer, coming
                      from the silica-rich network, and (ii) an elastic response
                      from the segregated carbon phase within the samples.
                      Furthermore, two distinct effects of the carbon phase on the
                      HT creep behavior of SiOC were identified and are discussed
                      in the present paper: the effect of the carbon presence
                      within the SiOC network (the “carbidic” carbon), which
                      induces a significant increase in the viscosity and a strong
                      decrease in the activation energy for creep, as compared to
                      vitreous silica; and the influence of the segregated carbon
                      phase (the “free” carbon), which has been shown to
                      affect the viscosity and the activation energy of creep and
                      dominates the creep behavior in phase-separated silicon
                      oxycarbides.},
      cin          = {IEK-1},
      ddc          = {660},
      cid          = {I:(DE-Juel1)IEK-1-20101013},
      pnm          = {899 - ohne Topic (POF2-899)},
      pid          = {G:(DE-HGF)POF2-899},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000346099800034},
      doi          = {10.1111/jace.13206},
      url          = {https://juser.fz-juelich.de/record/186614},
}