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@ARTICLE{Huczkowski:824694,
      author       = {Huczkowski, P. and Lehnert, W. and Angermann, H.-H. and
                      Chyrkin, A. and Pillai, R. and Grüner, D. and Hejrani, E.
                      and Quadakkers, W. J.},
      title        = {{E}ffect of {G}as {F}low {R}ate on {O}xidation {B}ehaviour
                      of {A}lloy 625 in {W}et {A}ir in the {T}emperature {R}ange
                      900-1000 °{C}},
      journal      = {Materials and corrosion},
      volume       = {68},
      number       = {2},
      issn         = {0947-5117},
      address      = {Weinheim [u.a.]},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2016-07252},
      pages        = {159-170},
      year         = {2017},
      abstract     = {In many industrial processes, the flow rate of hot gaseous
                      service environments may be in the range of several m/s. In
                      the present paper, the effect of gas flow rate on the high
                      temperature oxidation behaviour of alloy 625 in wet air is
                      presented. The gas velocity was varied from near static
                      conditions to linear gas flow rates up to 6 m/s. The
                      oxidation kinetics were studied by gravimetry during
                      cyclic/discontinuous testing at 900 and 1000 °C. The
                      oxide scales and the subsurface depletion zones formed
                      during exposure were studied by light optical microscopy,
                      scanning electron microscopy with energy dispersive X-ray
                      analysis and, for selected specimens, by electron
                      backscatter diffraction. It was found that Cr loss due to
                      formation of volatile species is substantially enhanced by
                      high gas flow rates thus significantly influencing the
                      oxidation limited life time of the oxidising component.
                      Within the studied range of flow rates no plateau value was
                      reached, the Cr loss being substantially larger at a flow of
                      6 m/s than at 0.7 m/s. Additionally, it was found that
                      geometrical factors of the test specimen substantially
                      affected the extent of volatile species formation.
                      Especially the leading edge of the specimen exhibited more
                      extensive Cr loss than the other specimen areas.},
      cin          = {IEK-2 / IEK-3},
      ddc          = {670},
      cid          = {I:(DE-Juel1)IEK-2-20101013 / I:(DE-Juel1)IEK-3-20101013},
      pnm          = {111 - Efficient and Flexible Power Plants (POF3-111) / 135
                      - Fuel Cells (POF3-135)},
      pid          = {G:(DE-HGF)POF3-111 / G:(DE-HGF)POF3-135},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000394663600006},
      doi          = {10.1002/maco.201608831},
      url          = {https://juser.fz-juelich.de/record/824694},
}