Metallurgical and Materials Transactions A

, Volume 49, Issue 9, pp 4362–4372 | Cite as

Revisit the Type II Corrosion Mechanism

  • Wei-Jun ZhangEmail author
  • Reza Sharghi-Moshtaghin
Topical Collection: Superalloys and Their Applications
Part of the following topical collections:
  1. Third European Symposium on Superalloys and their Applications


Since it was first proposed in the early 1980s, Type II hot corrosion has been widely cited in the literature as a process of molten sulfate attack on high-temperature alloy components. In the current study, typical Type II corrosion pits observed on field components were characterized using high-resolution TEM technique. The corrosion products in the pits were found to be mainly of nanosized sulfides and oxides, but not of the hypothesized sulfates. The results suggest a solid-phase corrosion process involving the cooperative precipitation of fine sulfides and oxides at the corrosion front.


  1. 1.
    J. Stringer, Annual Review of Materials Research 1976, vol. 7, p. 477–509.Google Scholar
  2. 2.
    Bornstein N.S. Journal of Metals 1996, vol. 11, p. 37–39.Google Scholar
  3. 3.
    Pettit F, Oxidation of Metals 2011, vol. 76, p. 1–21.CrossRefGoogle Scholar
  4. 4.
    K.L. Luthra: Metall. Trans., 1982, vol. 13A, pp. 1647–54, 1853–64.Google Scholar
  5. 5.
    N.S. Bornstein and M.A. DeCrescente: Metall. Trans., 1971, pp. 2875–83.Google Scholar
  6. 6.
    J.A. Goebel and F.S. Pettit: Metall. Trans., 1970, pp. 1943–54.Google Scholar
  7. 7.
    K.T. Chiang, F.S. Pettit, and G.H. Meier: in High Temperature Corrosion, NACE-6, R.A. Rapp, ed., Houston, 1981, pp. 519–30.Google Scholar
  8. 8.
    Lillerud KP, Kofstad P, Oxidation of Metals 1984, vol. 21, pp. 233–70.CrossRefGoogle Scholar
  9. 9.
    Lortrakul P, Trice RW, Trumble KP, Dayananda MA, Corrosion Science 2014, vol. 80, pp. 408–15.CrossRefGoogle Scholar
  10. 10.
    Sumner J, Encinas-Oropesa A, Simms NJ, Nicholls JR, Oxidation of Metals 2013, vol. 80, pp. 553–63.CrossRefGoogle Scholar
  11. 11.
    Haight H, Potter A, Sumner J, Gray S, Oxidation of Metals 2015, vol. 84, pp. 607–19.CrossRefGoogle Scholar
  12. 12.
    Gheno T and Gleeson B, Oxidation of Metals 2015, vol. 84, pp. 567–84.CrossRefGoogle Scholar
  13. 13.
    Gheno T, Azar MZ, Heuer AH, Gleeson B, Corrosion Science 2015, vol. 10, p. 32–46.CrossRefGoogle Scholar
  14. 14.
    Task MN, Gleeson B, Pettit FS, Meier GH, Oxidation of Metals 2013, vol. 80, pp. 541–52.CrossRefGoogle Scholar
  15. 15.
    C.S. Giggins and F.S. Pettit: Hot Corrosion Degradation of Metals and Alloys—A Unified Theory, PWA Report No. FR-11545, 1979, pp. 1–65.Google Scholar
  16. 16.
    Rapp RA, Corrosion Science 2002, vol. 44, pp. 209–21.CrossRefGoogle Scholar

Copyright information

© The Minerals, Metals & Materials Society and ASM International 2018

Authors and Affiliations

  1. 1.GE AviationCincinnatiUSA
  2. 2.GE Global Research CenterNiskayunaUSA

Personalised recommendations