Hostname: page-component-cd9895bd7-lnqnp Total loading time: 0 Render date: 2024-12-27T02:08:52.858Z Has data issue: false hasContentIssue false
  • English
  • Français

XANES Analysis of BCC/FCC Two-Phase Binary Alloys

Published online by Cambridge University Press:  10 February 2011

P.J. Schilling ,
R.C. Tittsworth ,
E. Ma  and
J.-H. He
P.J. Schilling
Affiliation:
Mechanical Engineering Department, University of New Orleans (UNO), New Orleans, LA 70148, USA, pschili@edu
R.C. Tittsworth
Affiliation:
Center for Advanced Microstructures and Devices, Louisiana State University, Baton Rouge, LA 70806, USA
E. Ma
Affiliation:
Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
J.-H. He
Affiliation:
Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
Get access

Abstract

A critical factor in the characterization of two-phase binary alloy systems is the determination of the phase fractions and compositions of the two coexisting solid solutions for any given overall composition of the two-phase mixture. In some systems, for example nanocrystalline alloys formed by high-energy ball-milling, these parameters are difficult to attain by traditional techniques like x-ray diffraction. A new technique has been developed to obtain these quantities indirectly from x-ray absorption near edge structure (XANES) data collected at the two relevant absorption edges, with the formulation of this technique presented here in detail. The technique has been tested using Fe-Ni fcc and bcc standards and the results indicate that the method is accurate to within 5%. This method has been applied to two-phase (f.c.c. and b.c.c.) binary alloys formed by ball-milling of Cu100-xFex(x = 50-80).

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 590: Symposium R – Applications of Synchrotron Radiation Techniques…V , 1999 , 71
Copyright
Copyright © Materials Research Society 2000

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

1. Hong, L.B. and Fultz, B., Acta Mater. 46, 2937 (1998).10.1016/S1359-6454(97)00481-3Google Scholar
2. Hong, L.B. and Fultz, B., J. Appl. Phys. 79, 3946 (1996).10.1063/1.361821Google Scholar
3. Schilling, P.J., He, J.H., Tittsworth, R.C., and Ma, E., Acia Mater., 47, 2525 (1999).10.1016/S1359-6454(99)00111-1Google Scholar
4. Bianconi, A., in x-ray Absorption: Principles, Applications, Techniques of EXAFS, SEXAFS, and XANES, edited by Prins, D. C. K. a. R. (John Wiley & Sons, New York, 1988), Vol. 92, p. 573.Google Scholar
5. Brown, G.E. Jr, Calas, G., Waychunas, G. A., and Petiau, J., in Spectroscopic Methods in Mineralogy and Geology, edited by Hawthorne, F. C. (Mineralogical Society of America, Chelsea, Michigan, 1988), Vol. 18, p. 431.10.1515/9781501508974-013Google Scholar
6. Stöhr, J., NEXAFS Spectroscopy (Springer-Verlag, New York, 1992).10.1007/978-3-662-02853-7Google Scholar
7. Waldo, G. S., Carlson, R. M. K., Moldowan, J. M., Peters, K.E., and Penner-Hahn, J.E., Geochimica et Cosmochimica Acta 55, 801 (1991).10.1016/0016-7037(91)90343-4Google Scholar
8. George, G. N., Gorbaty, M. L., Kelemen, S. R., Sansone, M., Energy & Fuels 5, 93 (1991).10.1021/ef00025a016Google Scholar
9. Schilling, P.J. and Tittsworth, R.C., J. Synchrotron Rad, 6, 497–499 (1999).10.1107/S0909049599001387Google Scholar
10. Ressler, T., J. Physique IV France, 7, C2–269 (1997).Google Scholar