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The Sulfidation of Inconel 738 in H2/H2S/Ar Gas Mixture at 500–900°C

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Abstract

The sulfidation behavior of the cast nickel-base superalloy Inconel 738 (IN-738) was studied over the temperature range 500–900°C in three various ratios of H2/H2S/Ar atmospheres having sulfur partial pressures in the range 10−4–102 Pa. The sulfidation kinetics followed the parabolic rate law in all cases, and the sulfidation rates increased with increasing temperature and sulfur partial pressure. In general, the scales formed were heterophasic and duplex, consisting of an outer layer composed mostly of nickel sulfides (mostly NiS and Ni3S2, and minor Ni7S6 detected at T > 750°C) plus some CoS2/Co3S4, CoMo2S4, NiCo2S4, and minor chromium sulfide (Cr2S3/Cr3S4), while the inner layer contained a mixture of nickel sulfides and minor amounts ofA12S3 and Cr2S3/Cr3S4. The amount of NiS decreased and that of Ni3S2 increased with increasing temperature. The dependence of the sulfidation rate constants (K p ) and Ps(2)(the n value) was significantly higher at T ≥ 850°C as compared to that measured at lower temperatures (T ≤ 850°C).

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References

  1. P. Kofstad, High Temperature Corrosion (Elsevier Applied Science, London, New York, 1988).

    Google Scholar 

  2. G. Y. Lai, High-Temperature Corrosion of Engineering Alloys (ASM International, Materials Park, OH, USA, 1990).

    Google Scholar 

  3. W. Kai, C. H. Lee, T. W. Lee, and C.-H. Wu. Oxidation of Metals 56, 51(2001).

    Google Scholar 

  4. B. Gleeson, D. L. Douglass, and F. Gesmundo, Oxidation of Metals 31, 209(1989).

    Google Scholar 

  5. Thermodynamic Data for Pure Substance, 3rd edn. (American Chemical Society and American Institute of Physics for National Bureau of Standards, 1995).

  6. S. Mrowec, and K. Przybylski, Oxidation of Metals 31, 209(1985).

    Google Scholar 

  7. S. Mrowec, and K. Przybylski, High Temperature Materials and Processes 6, 1(1984).

    Google Scholar 

  8. M. F. Chen, D. L. Douglass, and F. Gesmundo, Oxidation of Metals 33, 399(1990).

    Google Scholar 

  9. D. J. Young, W. W. Smelter, and J. S. Kirkaldy, Journal of the Electrochemical Society 120, 1221(1973).

    Google Scholar 

  10. B. Gleeson, D. L. Douglass, and F. Gesmundo, Oxidation of Metals 33, 425(1990).

    Google Scholar 

  11. W. Kai, D. L. Douglass, and F. Gesmundo, Oxidation of Metals 37, 389(1992).

    Google Scholar 

  12. M. F. Chen, and D. L. Douglass, Oxidation of Metals 32, 185(1989).

    Google Scholar 

  13. S. Mrowec, and J. Hanowski, in Advanced in Ceramics Nonstoichiometric Compounds, C. R. A. Catlow, and M. C. Markrodt, eds., Am. Ceram. Soc. 23, 585(1986).

  14. B. S. Lee and R. A. Rapp, Journal of the Electrochemical Society 131, 2998(1984).

    Google Scholar 

  15. F. Jellinek, Acta Crystallographica 10, 620(1957).

    Google Scholar 

  16. N. Birks, and G. H. Meier, Introduction to High Temperature Oxidation of Metals (Edward Arnold, London, UK, 1983), p. 39.

    Google Scholar 

Download references

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Authors and Affiliations

  1. Institute of Materials Engineering, National Taiwan Ocean University, Keelung, 20224, Taiwan, Republic of China

    W. Kai, Y. T. Lin, C. C. Yu & P. C. Chen

  2. Power Research Institute, Taiwan Power Company, Shu-Lin, Taipei, 23802, Taiwan, Republic of China

    C.-H. Wu

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  1. W. Kai
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  2. Y. T. Lin
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  3. C. C. Yu
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  4. P. C. Chen
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  5. C.-H. Wu
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Kai, W., Lin, Y.T., Yu, C.C. et al. The Sulfidation of Inconel 738 in H2/H2S/Ar Gas Mixture at 500–900°C. Oxidation of Metals 61, 507–527 (2004). https://doi.org/10.1023/B:OXID.0000032336.13788.72

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  • DOI: https://doi.org/10.1023/B:OXID.0000032336.13788.72

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