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The Use of Soft X-Ray Spectroscopy as a Tool for Studying the Surface Region of Metals and Alloys*

Published online by Cambridge University Press:  06 March 2019

J.E. Holliday
J.E. Holliday*
Affiliation:
McDonnell Douglas Research Laboratories, McDonnell Douglas Corporation, St. Louis, Missouri 63166
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Abstract

The present investigation shows that soft x-ray spectroscopy is an effective tool for investigating the surface region of metals and alloys from 10 to 1000 Å. Results are presented where soft x-ray spectroscopy was employed to investigate oxidation of metals and alloys, alloy dissolution, and protective coatings. By using the LII/LIII ratio of iron and titanium, the surface oxide thicknesses of these metals could be obtained, For Fe-Cr alloys there is an increase in the amount of chromium relative to chromium oxide with decreasing chormium content. The oxide surface of steel with a 50 Å metal protective coating was reduced when the protective metal oxide had a heat of formation greater than that of iron oxide. In Cu-30Zn alloys, the first 15 min of dissolution showed an increased copper enrichment in the surface of Cu-30Zn.

Type
Research Article
Information
Advances in X-Ray Analysis , Volume 16: 'Twenty-First Annual Conference on Applications of X-ray Analysis, August 2-4, 1972 , 1972 , pp. 53 - 62
Copyright
Copyright © International Centre for Diffraction Data 1972

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Footnotes

*

This research was conducted under the McDonnell Douglas Independent Research and Development Program.

References

1. Holliday, J.E., “The Effect of Surface Oxide on the Changes in the Fe LII/LIII Ratio with Accelerating Voltage” in The Advances in X-Ray Analysis, ed. Barrett, C.S., Newkirk, J.B., and Ruud, C., (Plenum Publishing Co., New York, 1971), Vol. 14, p. 243.Google Scholar
2. Holliday, J.E., “Soft X-Ray Emission Spectroscopy in the 10 to 150 Å Region”, in The Handbook of X-Rays, ed. Kaelble, E.F., (McGraw Hill Book Co., New York, 1967), p. 38–1.Google Scholar
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7. Holliday, J.E., Pickering, H.W., “A Soft X-Ray Study of the Near Surface Composition of a Binary Alloy During Simultaneous Dissolution of It's Components”, J. Electro. Chem. (submitted for publication).Google Scholar