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Oxidation of Metals

, Volume 61, Issue 3–4, pp 239–251 | Cite as

Fast Internal Oxidation of Ni–Zr–Y Alloys at Low Oxygen Pressure

  • B. Kloss
  • M. Wenderoth
  • U. Glatzel
  • R. Völkl
Article

Abstract

Oxidation tests of Ni alloys with additions of Zr and Y were carried out at 1000° C under low oxygen partial pressure. Oxidation kinetics as well as particle morphologies and structures were investigated by scanning-electron microscopy, energy-dispersive X-ray analysis and X-ray diffraction. Internal oxidation was observed under all circumstances. The kinetics of the internal oxidation was determined. A binary Ni–Zr alloy shows in situ internal oxidation according to theory. Yttrium was found to have a strong influence on the oxidation kinetics. Even minor Y contents considerably accelerate internal oxidation. Fast internal oxidation of ternary Ni–Zr–Y alloys can not be explained by standard internal oxidation theory.

internal oxidation oxide-dispersion-strengthened (ODS) oxygen partial pressure oxygen diffusion nickel alloy 

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Copyright information

© Plenum Publishing Corporation 2004

Authors and Affiliations

  • B. Kloss
    • 1
  • M. Wenderoth
    • 1
  • U. Glatzel
    • 1
  • R. Völkl
    • 1
  1. 1.Metallic MaterialsUniversity Bayreuth, Ludwig-Thoma-BayreuthGermany

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