Properties of protective oxide scales containing cerium on Incoloy 800H in oxidizing and sulfidizing environments. I. Constant-extension-rate study of mechanical properties

V.A.C. Haanappel, T. Fransen, Bert Geerdink, P.J. Gellings

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Abstract

The mechanical properties of ceramic coatings containing cerium oxide, prepared by the sol-gel method and used to protect Incoloy 800H against aggressive environments, are reported. Deformation and cracking behavior in oxidizing and sulfidizing environments has been investigated by constant-extension-rate tests. Extension rates were between 9.3×10−6 and 3.7×10−7 sec−1 at 823 <T<973 K. Under these conditions, cerium oxide sol-gel-coated specimens do not show any failure at extensions of 1.0% or more, but in hydrogen, sulfide failure is found at lower extensions than in air.
Original languageEnglish
Pages (from-to)201-208
JournalOxidation of metals
Volume30
Issue number3-4
DOIs
Publication statusPublished - 1988

Keywords

  • cerium
  • IR-85590
  • sulfidation
  • Oxidation
  • Constant-extension-rate tests
  • sol-gel method
  • Incoloy 800H
  • ceramic coatings

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