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@ARTICLE{Kumar:893890,
      author       = {Kumar, Nitish and Gupta, Mohit and Mack, Daniel E. and
                      Mauer, Georg and Vaßen, Robert},
      title        = {{C}olumnar {T}hermal {B}arrier {C}oatings {P}roduced by
                      {D}ifferent {T}hermal {S}pray {P}rocesses},
      journal      = {Journal of thermal spray technology},
      volume       = {30},
      issn         = {1544-1016},
      address      = {Boston, Mass.},
      publisher    = {Springer},
      reportid     = {FZJ-2021-02902},
      pages        = {1437-1452},
      year         = {2021},
      abstract     = {Suspension plasma spraying (SPS) and plasma spray-physical
                      vapor deposition (PS-PVD) are the only thermal spray
                      technologies shown to be capable of producing TBCs with
                      columnar microstructures similar to the electron
                      beam-physical vapor deposition (EB-PVD) process but at
                      higher deposition rates and relatively lower costs. The
                      objective of this study was to achieve fundamental
                      understanding of the effect of different columnar
                      microstructures produced by these two thermal spray
                      processes on their insulation and lifetime performance and
                      propose an optimized columnar microstructure.
                      Characterization of TBCs in terms of microstructure, thermal
                      conductivity, thermal cyclic fatigue lifetime and burner rig
                      lifetime was performed. The results were compared with TBCs
                      produced by the standard thermal spray technique,
                      atmospheric plasma spraying (APS). Bondcoats deposited by
                      the emerging high-velocity air fuel (HVAF) spraying were
                      compared to the standard vacuum plasma-sprayed (VPS)
                      bondcoats to investigate the influence of the bondcoat
                      deposition process as well as topcoat–bondcoat interface
                      topography. The results showed that the dense
                      PS-PVD-processed TBC had the highest lifetime, although at
                      an expense of the highest thermal conductivity. The reason
                      for this behavior was attributed to the dense intracolumnar
                      structure, wide intercolumnar gaps and high column density,
                      thus improving the strain tolerance and fracture toughness.},
      cin          = {IEK-1},
      ddc          = {670},
      cid          = {I:(DE-Juel1)IEK-1-20101013},
      pnm          = {1241 - Gas turbines (POF4-124)},
      pid          = {G:(DE-HGF)POF4-1241},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000670181200002},
      doi          = {10.1007/s11666-021-01228-5},
      url          = {https://juser.fz-juelich.de/record/893890},
}