Advertisement

Journal of Central South University

, Volume 18, Issue 5, pp 1354–1358 | Cite as

Effects of CeO2 coating on oxidation behavior of T91 steel in water vapor

  • Zeng-wu Yue (岳增武)
  • Min Fu (傅敏)
  • Xin-geng Li (李辛庚)
  • Xue-lei Tian (田学雷)Email author
Article
  • 81 Downloads

Abstract

Oxidation behaviors of blank and CeO2 coated T91 steel were investigated at 600 °C in water vapor for up to 150 h. Gold marker was used to define the mass transport direction. The oxide scales were studied with X-ray diffractometry (XRD), scanning electron microscopy (SEM) and electron probe microanalyzer (EPMA). The oxidation resistance of the steel is improved by CeO2 coating, though the improvement is not remarkable. Ce-rich oxide band is located at the interface of the inner equiaxed layer and the outer columnar layer after oxidation, which is not consistent with the original surface. The results show that outward iron transport is blocked by the Ce-rich band. A new oxide nucleating and growing site (reaction front) is induced at the inner surface of the Ce rich band.

Key words

high temperature oxidation T91 steel cerium reactive element diffusion 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    ECER G M, SINGH R B, MEIER G H. The influence of superficially applied oxide powders on the high-temperature oxidation behavior of Cr2O3-forming alloys [J]. Oxidation of Metals, 1982, 18(1/2): 55–81.CrossRefGoogle Scholar
  2. [2]
    STRINGER J. The reactive element effect in high-temperature corrosion [J]. Materials Science and Engineering A, 1989, 120(1): 129–137.CrossRefGoogle Scholar
  3. [3]
    HOU P Y, STRINGER J. The influence of ion-implanted yttrium on the selective oxidation of chromium in Co-25wt.% Cr [J]. Oxidation of Metals, 1988, 29(1/2): 45–73.CrossRefGoogle Scholar
  4. [4]
    CHEVALIER S, BONNET G, DUFOUR P, LARPIN J P. The REE —A way to improve the high-temperature behavior of stainless steels [J]. Surface and Coatings Technology, 1998, 100/101: 208–213.CrossRefGoogle Scholar
  5. [5]
    ALMAN D E, JABLONSKI P D, KUNG S C. Surface modification of alloys for improved oxidation resistance in SOFC Applications [C]// BANSAL N P, WERESZCZAK A, LARA-CURZIO E. Advances in Solid Oxide Fuel Cells II: Ceramic Engineering and Science Proceedings. Cocoa Beach, Florida: The American Ceramic Society, 2007, 27(4): 253–262.Google Scholar
  6. [6]
    WRIGHT I G, TORTORELLI P F. Program on technology innovation: Oxide growth and exfoliation on alloys exposed to steam [R]. Palo Alto, CA: Electric Power Institute, 2007.Google Scholar
  7. [7]
    SUNDARARAJAN T, KURODA S, KAWAKITA J, SEAL S. High temperature corrosion of nanoceria coated 9Cr-1Mo ferritic steel in air and steam [J]. Surface and Coatings Technology, 2006, 201(6): 2124–2130.CrossRefGoogle Scholar
  8. [8]
    ENNIS P J, QUADAKKERS W J. Mechanisms of steam oxidation in high strength martensitic steels [J]. International Journal of Pressure Vessels and Piping, 2007, 84(1/2): 75–81.CrossRefGoogle Scholar
  9. [9]
    LAVERDE D, GÓMEZ-ACEBO T, CASTRO F. Continuous and cyclic oxidation of T91 ferritic steel under steam [J]. Corrosion Science, 2004, 46(3): 613–631.CrossRefGoogle Scholar
  10. [10]
    Pantip Ampornrat, Gary S W. Oxidation of ferritic-martensitic alloys T91, HCM12A and HT-9 in supercritical water [J]. Journal of Nuclear Materials, 2007, 371(1/2/3): 1–17.CrossRefGoogle Scholar
  11. [11]
    ZHANG Du-qing, LIU Guang-ming, Zhao Guo-qun, GUAN Yan-jin. Cyclic oxidation behavior of Fe-9Cr-1Mo steel in water vapor atmosphere [J]. Journal of Central South University of Technology, 2009, 16(4): 535–540.CrossRefGoogle Scholar
  12. [12]
    POLMAN E A, FRANSEN T, GELLINGS P J. High-temperature corrosion and mechanical properties of protective scales on Incoloy 800H: The influence of preoxidation and ion implantation [J]. Oxidation of Metals, 1990, 33(1/2): 135–155.CrossRefGoogle Scholar
  13. [13]
    CHEVALIER S, LARPIN J P. Influence of reactive element oxide coatings on the high temperature cyclic oxidation of chromiaforming steels [J]. Materials Science and Engineering A, 2003, 363(1/2): 116–125.CrossRefGoogle Scholar
  14. [14]
    QI Hui-bin, LEES D G, HE Ye-dong. Effect of surface applied rare earth containing thin oxide films on high-temperature oxidation of Fe25Cr [J]. Corrosion Science and Protection Technology, 1999, 11(4): 193–201. (in Chinese)Google Scholar
  15. [15]
    HOU P Y, SHUI Z R, CHUANG G Y, STRINGER J. Effect of reactive element oxide coatings on the high temperature oxidation behavior of a FeCrAl alloy [J]. Journal of The Electrochemical Society, 1992, 139(4): 1119–1126.CrossRefGoogle Scholar

Copyright information

© Central South University Press and Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Zeng-wu Yue (岳增武)
    • 1
    • 2
  • Min Fu (傅敏)
    • 2
  • Xin-geng Li (李辛庚)
    • 2
  • Xue-lei Tian (田学雷)
    • 1
    Email author
  1. 1.Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials of Ministry of EducationShandong UniversityJinanChina
  2. 2.Boiler and Pressure Vessel Inspection CenterShandong Electric Power Research InstituteJinanChina

Personalised recommendations