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@ARTICLE{Dargatz:189585,
      author       = {Dargatz, Benjamin and Gonzalez, Jesus and Guillon, Olivier},
      title        = {{I}mproved compaction of {Z}n{O} nano-powder triggered by
                      the presence of acetate and its effect on sintering},
      journal      = {Science and technology of advanced materials},
      volume       = {16},
      number       = {2},
      issn         = {1878-5514},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2015-02725},
      pages        = {025008},
      year         = {2015},
      abstract     = {The retention of nanocrystallinity in dense ceramic
                      materials is still a challenge, even with the application of
                      external pressure during sintering. The compaction behavior
                      of high purity and acetate enriched zinc oxide (ZnO)
                      nano-powders was investigated. It was found that acetate in
                      combination with water plays a key role during the
                      compaction into green bodies at moderate temperatures.
                      Application of constant pressure resulted in a homogeneous
                      green body with superior packing density $(86\%$ of
                      theoretical value) at moderate temperature (85 °C) in the
                      presence of water. In contrast, no improvement in density
                      could be achieved if pure ZnO powder was used. This
                      compaction behavior offers superior packing of the
                      particles, resulting in a high relative density of the
                      consolidated compact with negligible coarsening. Dissolution
                      accompanying creep diffusion based matter transport is
                      suggested to strongly support reorientation of ZnO particles
                      towards densities beyond the theoretical limit for packing
                      of ideal monosized spheres. Finally, the sintering
                      trajectory reveals that grain growth is retarded compared to
                      conventional processing up to $90\%$ of theoretical density.
                      Moreover, nearly no radial shrinkage was observed after
                      sinter-forging for bodies performed with this advanced
                      processing method.},
      cin          = {IEK-1 / JARA-ENERGY},
      ddc          = {690},
      cid          = {I:(DE-Juel1)IEK-1-20101013 / $I:(DE-82)080011_20140620$},
      pnm          = {899 - ohne Topic (POF3-899)},
      pid          = {G:(DE-HGF)POF3-899},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000353641100019},
      doi          = {10.1088/1468-6996/16/2/025008},
      url          = {https://juser.fz-juelich.de/record/189585},
}