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@ARTICLE{deGoes:877274,
      author       = {de Goes, Wellington Uczak and Markocsan, Nicolaie and
                      Gupta, Mohit and Vaßen, Robert and Matsushita, Taishi and
                      Illkova, Kseniya},
      title        = {{T}hermal barrier coatings with novel architectures for
                      diesel engine applications},
      journal      = {Surface and coatings technology},
      volume       = {396},
      issn         = {0257-8972},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2020-02097},
      pages        = {125950},
      year         = {2020},
      abstract     = {The increased demands for higher efficiency and
                      environmentally friendly diesel engines have led to a
                      continuous search for new coating processing routes and new
                      ceramic materials that can provide the required properties
                      when applied on engine components such as pistons and
                      exhaust manifolds. Although successful in gas turbine
                      applications, thermal barrier coatings (TBCs) produced by
                      suspension plasma spraying (SPS) processes have not been
                      employed so far in the automotive industry. This work aims
                      to achieve a better understanding of the role of thermal
                      conductivity and thermal effusivity on the durability of SPS
                      TBCs applied to pistons of diesel engines. Three different
                      coating architectures were considered for this study. The
                      first architecture was yttria-stabilized zirconia (YSZ)
                      lamellar top coat deposited by APS (Atmospheric Plasma
                      Spray) and used as a reference sample in this study. The
                      second architecture was a columnar SPS top coat of either
                      YSZ or gadolinium zirconate (GZO) while the third
                      architecture was an SPS columnar top coat, “sealed” with
                      a dense sealing layer deposited on the top coat. Two types
                      of sealing layers were used, a metallic (M) or a ceramic
                      thermal spray layer (C). Laser Flash Analysis (LFA) was used
                      to determine the thermal conductivity and thermal effusivity
                      of the coatings. Two different thermal cyclic tests were
                      used to test the TBCs behavior under cyclic thermal loads.
                      Microstructure analysis before and after the thermal cyclic
                      tests were performed using SEM in different microstructures
                      and materials. The thermal cyclic test results were
                      correlated with coatings microstructure and thermophysical
                      properties. It was observed that the columnar coatings
                      produced by SPS had an enhanced service life in the thermal
                      cyclic tests as compared to the APS coatings.},
      cin          = {IEK-1},
      ddc          = {670},
      cid          = {I:(DE-Juel1)IEK-1-20101013},
      pnm          = {113 - Methods and Concepts for Material Development
                      (POF3-113)},
      pid          = {G:(DE-HGF)POF3-113},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000540175000022},
      doi          = {10.1016/j.surfcoat.2020.125950},
      url          = {https://juser.fz-juelich.de/record/877274},
}