Oxidation of Metals

, Volume 79, Issue 3, pp 405–427

Slow Transition from Protective to Breakaway Oxidation of Haynes 214 Foil at High Temperature

Authors

  • D. J. Young
    • School of Materials Science and EngineeringThe University of New South Wales
    • Forschungszentrum Jülich GmbH
  • J. He
    • Forschungszentrum Jülich GmbH
  • D. Grüner
    • Forschungszentrum Jülich GmbH
  • W. J. Quadakkers
    • Forschungszentrum Jülich GmbH
Original Paper

DOI: 10.1007/s11085-013-9364-4

Cite this article as:
Young, D.J., Chyrkin, A., He, J. et al. Oxid Met (2013) 79: 405. doi:10.1007/s11085-013-9364-4

Abstract

The oxidation behaviour of thin sheet specimens of the alumina forming nickel base alloy 214 in the temperature range 1,100–1,200 °C is described. Rapid transient oxidation produces a spinel oxide layer which then stops growing, as a protective alumina layer forms beneath. The slow growth of this alumina ceases when the alloy aluminium content is exhausted. Subsequent formation of an innermost chromia layer signals an increase in oxygen activity at the scale-alloy interface. The abnormally slow growth of this layer extends the alloy lifetime. Examination of individual layer growth processes revealed a complex time dependence of spinel composition as a result of Cr evaporation, and dissolution of alumina in the innermost chromia.

Keywords

Nickel base alloy Breakaway oxidation Alloy 214 Alumina Cr-evaporation Transient spinel

Copyright information

© Springer Science+Business Media New York 2013