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@ARTICLE{Wakai:901963,
      author       = {Wakai, Fumihiro and Okuma, Gaku and Mücke, Robert and
                      Guillon, Olivier},
      title        = {{M}odelling of elimination of strength-limiting defects by
                      pressure-assisted sintering at low stress levels},
      journal      = {Journal of the European Ceramic Society},
      volume       = {41},
      number       = {16},
      issn         = {0955-2219},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2021-03939},
      pages        = {202 - 210},
      year         = {2021},
      abstract     = {The structural reliability of sintered products depends on
                      large defects introduced during powder processing, which
                      cannot be removed by pressureless sintering. Here, we
                      present a model how a large single ellipsoidal void is
                      deformed, and finally disappears by pressure-assisted
                      sintering. Taya-Seidel’s model is applied to predict the
                      shrinkage of a large void in a compressible linear viscous
                      material by using bulk viscosity, shear viscosity, and
                      sintering stress that are determined experimentally for
                      sintering of alumina powder at low stress levels. The
                      application of mechanical stress promotes the densification
                      rate. Its effect is maximum for hot isostatic pressing (HIP)
                      and minimum for sinter forging. The effect is intermediate
                      for hot pressing (HP) and spark plasma sintering (SPS),
                      because the hydrostatic component of stress varies with
                      densification. While a crack-like defect can be removed
                      during densification, a spherical void must be eliminated by
                      shear deformation in the final stage during dwell time.},
      cin          = {IEK-1 / JARA-ENERGY},
      ddc          = {660},
      cid          = {I:(DE-Juel1)IEK-1-20101013 / $I:(DE-82)080011_20140620$},
      pnm          = {899 - ohne Topic (POF4-899) / SPP 1959:  Manipulation of
                      matter controlled by electric and magnetic fields: Towards
                      novel synthesis and processing routes of inorganic materials
                      (274005202) / DFG project 319339707 - Diffusionsgesteuerte
                      Prozesse in polykristallinem Ceroxid: Kombinierte Wirkung
                      von elektrischem Feld und mechanischer Belastung},
      pid          = {G:(DE-HGF)POF4-899 / G:(GEPRIS)274005202 /
                      G:(GEPRIS)319339707},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000708708100002},
      doi          = {10.1016/j.jeurceramsoc.2021.09.040},
      url          = {https://juser.fz-juelich.de/record/901963},
}