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On the high-temperature oxidation protection behavior of plasma-sprayed Stellite-6 coatings

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Abstract

High-temperature oxidation resistance of the superalloys can be greatly increased by plasma-sprayed coatings, and this is a growing industry of considerable economic importance. The purpose of these coatings is to form long-lasting oxidation protective scales. In the current investigation, Stellite-6 coatings were deposited on two Ni-base superalloys, Superni 601 and Superni 718, and one Fe-base superalloy, Superfer 800H, by a shrouded plasma spray process. Oxidation studies were conducted on the coated superalloys in air at 900 °C under cyclic conditions for 50 cycles. Each cycle consisted of 1 hour heating followed by 20 minutes of cooling in air. The thermogravimetric technique was used to approximate the kinetics of oxidation. All of the coated superalloys nearly followed the parabolic rate law of oxidation. X-ray diffraction (XRD), scanning electron microscopy/energy dispersive X-ray (SEM/EDAX), and electron probe microanalysis (EPMA) techniques were used to analyze the oxidation products. The Stellite-6 coating was found to be successful in maintaining its continuous surface contact with the superalloy substrates in all cases. The oxide scales formed on the oxidized coated superalloys were found to be intact and spallation free. The main phases analyzed for the coated superalloys were oxides of cobalt and chromium and spinel of cobalt and chromium, which are suggested to be useful for developing oxidation resistance at high temperatures.

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References

  1. M.F. Stroosnijder, R. Mevrel, and M.J. Bennett: Mater. High Temp., 1994, vol. 12 (1), pp. 53–56.

    CAS  Google Scholar 

  2. P. Fauchais, J. F. Coudert, and M. Vardelle: J. Phys., 1997, vol. IV-7, pp. C4-187–C4-198.

    Google Scholar 

  3. O. Knotek: in Handbook of Hard Coatings: Deposition Technologies, Properties and Applications, R.F. Bunshah, ed., Noyes Publishing, Park Ridge, NJ, William Andrew Publishing, LLC, Norwich, NY, 2001, pp. 77–107.

    Google Scholar 

  4. G.W. Goward: Surf. Coating Technol., 1998, vols. 108–109, pp. 73–79.

    Article  Google Scholar 

  5. N. Hussain, K.A. Shahid, I.H. Khan, and S. Rahman: Oxid. Met., 1994, vol. 41 (3–4), pp. 251–69.

    Article  CAS  Google Scholar 

  6. C. Burman and T. Ericsson: Proc. Symp. High-Temperature Protective Coatings, Atlanta, GA, Mar. 7–8, S.C. Singhal, ed., TMS-AIME, Warrendale, PA, 1983, pp. 51–59.

    Google Scholar 

  7. H. Singh, D. Puri, and S. Prakash: Surf. Coating Technol., 2005, vol. 192 (1), pp. 27–38.

    Article  CAS  Google Scholar 

  8. H. Singh, D. Puri, and S. Prakash: Anti Corros. Method M., 2005, vol. 52 (2), pp. 84–95.

    Article  CAS  Google Scholar 

  9. A.S. Brasunas: NACE Basic Corrosion Course, NACE, Houston, TX, 1977, pp. 12.1–12.20.

    Google Scholar 

  10. G.A. Greene and C.C. Finfrock: Oxid. Met., 2001, vol. 55 (5–6), pp. 505–21.

    Article  CAS  Google Scholar 

  11. K.L. Luthra: J. Electrochem. Soc., 1985, vol. 132 (6), pp. 1293–98.

    Article  CAS  Google Scholar 

  12. H. Choi, B. Yoon, H. Kim, and C. Lee: Surf. Coating Technol., 2002, vol. 150 (2–3), pp. 297–308.

    Article  CAS  Google Scholar 

  13. Z. Liu, W. Gao, K.L. Dahm, and F. Wang: Acta Mater., 1998, vol. 46 (5), pp. 1691–1700.

    Article  CAS  Google Scholar 

  14. J. Doychak: Intermetallic Compounds, Principles and Practice, Vol. 1—Principles, J.H. Westbrook and F.L. Fleischer, eds., John Wiley & Sons Ltd., New York, NY, 1995, pp. 977–1016.

    Google Scholar 

  15. P. Niranatlumpong, C.B. Ponton, and H.E. Evans: Oxid. Met., 2000, vol. 53 (3–4), pp. 241–58.

    Article  CAS  Google Scholar 

  16. F.H. Stott: Mater. Characterization, 1992, vol. 28 (3), pp. 311–25.

    Article  CAS  Google Scholar 

  17. R.A. Rapp, J.H. Devan, D.L. Douglass, P.C. Nordine, F.S. Pettit, and D.P. Whittle: Mater. Sci. Eng., 1981, vol. 50, pp. 1–17.

    Article  CAS  Google Scholar 

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Authors and Affiliations

  1. the Mechanical Engineering Department, BBSB Engineering College, 140407, Fatehgarh Sahib, India

    H. Singh (Assistant Professor)

  2. the Metallurgical & Materials Engineering Department, Indian Institute of Technology Roorkee, 247667, Roorkee, India

    D. Puri (Assistant Professor) & S. Prakash (Professor)

  3. the Defence Metallurgical Research Laboratory, Hyderabad, India

    V. V. Rama Rao (Scientist)

Authors
  1. H. Singh
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  2. D. Puri
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  3. S. Prakash
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  4. V. V. Rama Rao
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Singh, H., Puri, D., Prakash, S. et al. On the high-temperature oxidation protection behavior of plasma-sprayed Stellite-6 coatings. Metall Mater Trans A 37, 3047–3056 (2006). https://doi.org/10.1007/s11661-006-0186-8

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  • DOI: https://doi.org/10.1007/s11661-006-0186-8

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