Abstract
EDAX spectrometry was employed as a semiquantitative analytical technique to determine the penetration depth of NiAl 2 O 4 into the internal oxidation zone of Ni-5 wt. % Al alloy oxidized in air at 1273 K. Depth profiles obtained by spot counting Al to Ni K α peak intensities demonstrated that a sharp NiAl 2 O 4 -Al 2 O 3 phase boundary exists in this internal oxidation zone at a normalized fractional depth which can be determined to an accuracy of 0.70±0.05. X-ray reflection diffraction analyses and color examination of chemical deep-etched tapered cross sections substantiated these results.
Similar content being viewed by others
References
J. S. Wolf and E. B. Evans,Corrosion 18, 129t (1962).
W. C. Hagel,Corrosion 21, 316 (1965).
F. S. Pettit,Trans. Met. Soc. AIME 239, 1296 (1967).
F. H. Stott and G. C. Wood,Corros. Sci. 17, 647 (1977).
H. M. Hindam and W. W. Smeltzer,J. Electrochem. Soc. 127, 1622 (1980).
W. W. Smeltzer, H. M. Hindam, and F. A. Elrefaie, Proceedings of the International Conference on High Temperature Corrosion, NACE, San Diego, in press.
F. A. Elrefaie and W. W. Smeltzer,J. Electrochem. Soc. 128, 2237 (1981).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Elrefaie, F.A., Smeltzer, W.W. Application of X-ray energy dispersive analyses (EDAX) to determine the penetration depth of one oxide phase (NiAl2O4) in a two-phase oxide internal oxidation zone (NiAl2O4 + Al2O3) of a binary alloy (Ni-Al). Oxid Met 17, 407–413 (1982). https://doi.org/10.1007/BF00742120
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00742120