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Hot-Corrosion Resistance of a Sputtered K38G Nanocrystalline Coating in Molten Sulfate at 900°C

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Abstract

The hot-corrosion behavior of a nanocrystalline coating of K38G alloy, prepared by magnetron sputtering and cast K38G in molten 75 wt.% Na2SO4+25 wt.% K2SO4 at 900°C was studied. The coating eliminated internal sulfidation during the early stage of corrosion as a result of the formation of a continuous and compact Al2O3 scale. The nanocrystallization of K38G alloy prolonged the incubation of breakaway corrosion and improved the corrosion resistance of K38G. The relevant corrosion mechanism is discussed.

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Authors and Affiliations

  1. State Key Laboratory for Corrosion and Protection, Institute of Metal Research, The Chinese Academy of Sciences, Wencui Road 62, Shenyang, 110016, China

    S. Geng, F. Wang, S. Zhu & W. Wu

Authors
  1. S. Geng
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  2. F. Wang
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  3. S. Zhu
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  4. W. Wu
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Geng, S., Wang, F., Zhu, S. et al. Hot-Corrosion Resistance of a Sputtered K38G Nanocrystalline Coating in Molten Sulfate at 900°C. Oxidation of Metals 57, 549–557 (2002). https://doi.org/10.1023/A:1015356522798

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  • DOI: https://doi.org/10.1023/A:1015356522798

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