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@ARTICLE{Cao:877546,
      author       = {Cao, Chen and Mücke, Robert and Guillon, Olivier},
      title        = {{E}ffect of {AC} field on uniaxial viscosity and sintering
                      stress of ceria},
      journal      = {Acta materialia},
      volume       = {182},
      issn         = {1359-6454},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2020-02282},
      pages        = {77 - 86},
      year         = {2020},
      abstract     = {The production of traditional and advanced ceramics is an
                      energy-intensive activity, which requires high temperatures
                      and long dwelling times to activate diffusional processes
                      necessary for densification. Electric field assisted
                      processing has received considerable attention recently, due
                      to its potential to significantly reduce the costs of
                      required heat treatments. However, the effect of electric
                      fields on the densification and coarsening of oxide ceramics
                      is still not completely understood, and the mechanisms
                      behind, in particular for fields, are still under debate.
                      The potential influence of electric field on the sintering
                      parameters (uniaxial viscosity and uniaxial sintering
                      stress) and microstructure of polycrystalline yttria doped
                      ceria were studied. Sintering parameters were measured
                      without and with AC electric fields (14 V/cm and
                      28 V/cm, 50 Hz) which were below the “flash regime”.
                      During all sintering measurements, the sample temperature
                      was adjusted by lowering the furnace temperature according
                      to the temperature measurements using densified samples.
                      Major findings are: (i) The densification behavior is
                      clearly modified by these moderate electric fields, although
                      temperature increase due to macroscopic Joule heating is
                      excluded. (ii) The densification rate remains proportional
                      to the applied stress under electrical fields. (iii)
                      Sintering parameters are significantly affected by the
                      applied electric fields.},
      cin          = {IEK-1},
      ddc          = {670},
      cid          = {I:(DE-Juel1)IEK-1-20101013},
      pnm          = {113 - Methods and Concepts for Material Development
                      (POF3-113) / DFG project 274005202 - 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)POF3-113 / G:(GEPRIS)274005202 /
                      G:(GEPRIS)319339707},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000501655200009},
      doi          = {10.1016/j.actamat.2019.10.035},
      url          = {https://juser.fz-juelich.de/record/877546},
}