Hostname: page-component-78c5997874-j824f Total loading time: 0 Render date: 2024-11-02T22:28:32.919Z Has data issue: false hasContentIssue false

Detection of a metallic glass layer by x-ray diffraction

Published online by Cambridge University Press:  31 January 2011

J.W. McCamy
Affiliation:
Department of Materials Science and Engineering, The University of Tennessee, Knoxville, Tennessee 37996-2200
M.J. Godbole
Affiliation:
Department of Materials Science and Engineering, The University of Tennessee, Knoxville, Tennessee 37996-2200
A.J. Pedraza
Affiliation:
Department of Materials Science and Engineering, The University of Tennessee, Knoxville, Tennessee 37996-2200
D.H. Lowndes
Affiliation:
Solid State Division. Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
Get access

Abstract

A simple, precise method for obtaining the average thickness of an amorphous layer formed by any surface treatment has been developed. The technique uses an x-ray diffractoeter to measure the reduction in the integrated intensity of several diffracted x-ray lines due to the near surface amorphous layer. The target material for generation of x rays is selected so that the emitted x rays are strongly absorbed by the specimen. This method permits thickness measurements down to ∼ 100 nm. It has been tested on a specimen of Fe80B20 on which an amorphous layer was produced by pulsed XeCl (308 nm) laser irradiation; the amorphous layer thickness was found to be 1.34 (∼0.1) um.

Type
Articles
Copyright
Copyright © Materials Research Society 1986

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1International Tables for X-ray Crystallography (Kynoch, Birmingham, England, 1974), Vol. IV, pp. 6 and 46.Google Scholar
2Cullity, B. D., Elements of X-ray Diffraction (Addison- Wesley, Reading, MA, 1978), 2nd ed., p. 133.Google Scholar
3Godbole, M. J., McCamy, J. W., Lowndes, D. H., and Pedraza, A. J. (to be published).Google Scholar
4The pulsed laser irradiation experiments that we performed in pure iron samples showed that, at variance with the splat cooling results, the L-S-y-a transformation sequence was altered. The extremely high cooling rates most probably suppress the thermally activated 8→γ transformation.Google Scholar
5Klug, H. P. and Alexander, L. E., X-ray Diffraction Procedures (Wiley, New York, 1974), 2nd ed., p. 273.Google Scholar
6Ray, R., Hasegawa, R., Chou, C. P., and Davis, L. A., Scr. Metall. 11, 973 (1977).CrossRefGoogle Scholar