The isothermal oxidation behaviour of FeAlCrZrB intermetallic in air over the temperature range of 700-1100 degrees C was studied. Characterisation of the specimens after oxidation was conducted using Xray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The rate constants of the isothermal oxidation and activation energies for oxide layer growth were determined. Limited scale spallation was observed in the specimens oxidised at 1100 degrees C. Scale failure for these specimens results from the high thermal stresses induced during the cooling stage after oxidation. (C) 2011 Elsevier B.V. All rights reserved.