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@ARTICLE{Hollnder:902188,
      author       = {Holländer, Christian and Kiliani, Stefan and Stamm, Werner
                      and Lüsebrink, Oliver and Harders, Harald and Wessel,
                      Egbert and Müller, Michael and Singheiser, Lorenz},
      title        = {{H}ot corrosion of {TBC}‐coated components upon
                      combustion of low‐sulfur fuels},
      journal      = {Materials and corrosion},
      volume       = {72},
      number       = {10},
      issn         = {1521-4176},
      address      = {Weinheim [u.a.]},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2021-04085},
      pages        = {1643 - 1655},
      year         = {2021},
      abstract     = {Gas turbine reliability is a crucial requirement for
                      passenger safety in aviation and a secure energy supply.
                      Hence, corrosive degradation of combustor parts, vanes, and
                      blades in gas turbines must be prevented. One of the most
                      severe forms of corrosion is alkali-sulfate-induced hot
                      corrosion, which is associated with internal sulfidation of
                      components and is usually anticipated to fade in importance
                      in the absence of sulfur. However, the literature suggests
                      that hot corrosion might still occur in low-sulfur
                      combustion gases. In this study, established thermodynamic
                      modeling methods are used to analyze the low-sulfur hot
                      corrosion regime. Liquid sodium chromate is found to be
                      stable in these conditions. A comparison of calculation
                      results and engine findings suggests that high alkali levels
                      can negatively impact thermal barrier coating life even if
                      sulfur is absent in the fuel. Laboratory tests are carried
                      out to validate the chromate formation on MCrAlY-coated
                      specimens. It is shown that molten sodium chromate can alter
                      the oxidation behavior of MCrAlY, promoting the formation of
                      voluminous spinel. This represents a new and different form
                      of hot corrosion compared to type I hot corrosion.},
      cin          = {IEK-2},
      ddc          = {670},
      cid          = {I:(DE-Juel1)IEK-2-20101013},
      pnm          = {1221 - Fundamentals and Materials (POF4-122)},
      pid          = {G:(DE-HGF)POF4-1221},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000667449700001},
      doi          = {10.1002/maco.202112371},
      url          = {https://juser.fz-juelich.de/record/902188},
}