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@ARTICLE{He:838248,
      author       = {He, Wenting and Mauer, Georg and Vaßen, Robert},
      title        = {{E}xcitation {T}emperature and {C}onstituent
                      {C}oncentration {P}rofiles of the {P}lasma {J}et {U}nder
                      {P}lasma {S}pray-{PVD} {C}onditions},
      journal      = {Plasma chemistry and plasma processing},
      volume       = {37},
      number       = {5},
      issn         = {1572-8986},
      address      = {Dordrecht},
      publisher    = {Springer Science + Business Media B.V.},
      reportid     = {FZJ-2017-06903},
      pages        = {1293 - 1311},
      year         = {2017},
      abstract     = {Plasma spray-physical vapor deposition (PS-PVD) is a
                      promising technology to produce columnar structured thermal
                      barrier coatings with excellent cyclic lifetime. The
                      characteristics of plasma jets generated by standard plasma
                      gases in the PS-PVD process, argon and helium, have been
                      studied by optical emission spectroscopy. Abel inversion was
                      introduced to reconstruct the spatial characteristics. In
                      the central area of the plasma jet, the ionization of argon
                      was found to be one of the reasons for low emission of
                      atomic argon. Another reason could be the demixing so that
                      helium prevails around the central axis of the plasma jet.
                      The excitation temperature of argon was calculated by the
                      Boltzmann plot method. Its values decreased from the center
                      to the edge of the plasma jet. Applying the same method, a
                      spurious high excitation temperature of helium was obtained,
                      which could be caused by the strong deviation from local
                      thermal equilibrium of helium. The addition of hydrogen into
                      plasma gases leads to a lower excitation temperature,
                      however a higher substrate temperature due to the high
                      thermal conductivity induced by the dissociation of
                      hydrogen. A loading effect is exerted by the feedstock
                      powder on the plasma jet, which was found to reduce the
                      average excitation temperature considerably by more than 700
                      K in the Ar/He jet.},
      cin          = {IEK-1},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IEK-1-20101013},
      pnm          = {113 - Methods and Concepts for Material Development
                      (POF3-113) / HITEC - Helmholtz Interdisciplinary Doctoral
                      Training in Energy and Climate Research (HITEC)
                      (HITEC-20170406)},
      pid          = {G:(DE-HGF)POF3-113 / G:(DE-Juel1)HITEC-20170406},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000407131900001},
      doi          = {10.1007/s11090-017-9832-8},
      url          = {https://juser.fz-juelich.de/record/838248},
}