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@PHDTHESIS{Wang:841224,
      author       = {Wang, Panpan},
      title        = {{N}umerical {S}imulation of {P}lasma {S}pray-{P}hysical
                      {V}apor {D}eposition},
      volume       = {401},
      school       = {Universität Bochum},
      type         = {Dissertation},
      address      = {Jülich},
      publisher    = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
      reportid     = {FZJ-2017-08316},
      isbn         = {978-3-95806-282-5},
      series       = {Schriften des Forschungszentrums Jülich Reihe Energie $\&$
                      Umwelt / Energy $\&$ Environment},
      pages        = {IX, 127 S.},
      year         = {2017},
      note         = {Universität Bochum, Diss., 2017},
      abstract     = {The modeling of the plasma spray process is driven by the
                      intention of further increasing the understanding the growth
                      mechanisms of columnar thermal barrier coatings (TBC). The
                      major parameters associated with the deposition process in
                      the experiment are the power input, plasma gas composition,
                      and chamber pressures resulting in distinct microstructures.
                      Therefore, the objective of this study was to simulate the
                      plasma jet and the growth of columnar TBCs. Five main topics
                      were examined: (1) thermodynamic and transport properties
                      for different plasma mixtures (35Ar-60He,
                      35Ar-60He-10H$_{2}$, and 100Ar-10H$_{2}$)depending on the
                      pressure and the temperature; (2) vacuum plasma spray (VPS);
                      (3) plasma-spray physical vapor deposition (PS-PVD); (4)
                      built-up of columnar coatings using the Monte-Carlo method;
                      (5) validation by experiments. Investigations of
                      thermodynamic and transport properties gave the basis for
                      the understanding of the plasma process and provide data of
                      the following plasma jet modeling. The plasma jet modeling
                      used three types of plasma mixture (35Ar-60He atpressures
                      ranging from 200 Pa-10000 Pa, 35Ar-60He-10H$_{2}$ at a
                      pressure of 200 Pa, and100Ar-10H$_{2}$ at a pressure of 200
                      Pa) was carried out by ANSYS Fluent 17, the results were
                      compared to photographs of the plasma jets. Taking into
                      account the influence of non-equilibrium, the plasma
                      composition and spectral line intensities were calculated.
                      Results of the measured and calculated intensities proved
                      that non-equilibrium exists. Finally, a two-dimensional
                      Monte Carlo simulation was used to investigate the formation
                      of columnar growth in plasma spray-physical vapor deposition
                      process (PS-PVD). The surface diffusion in the coating was
                      neglected because of the high deposition rate. The detailed
                      examination of the morphology, the orientation, the porosity
                      level of the columns is given, which is compared to the
                      microstructures produced by a PS-PVD process.},
      cin          = {IEK-1},
      cid          = {I:(DE-Juel1)IEK-1-20101013},
      pnm          = {899 - ohne Topic (POF3-899) / HITEC - Helmholtz
                      Interdisciplinary Doctoral Training in Energy and Climate
                      Research (HITEC) (HITEC-20170406)},
      pid          = {G:(DE-HGF)POF3-899 / G:(DE-Juel1)HITEC-20170406},
      typ          = {PUB:(DE-HGF)3 / PUB:(DE-HGF)11},
      url          = {https://juser.fz-juelich.de/record/841224},
}