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Ion Beam Mixing In Binary Amorphous Metallic Alloys*

Published online by Cambridge University Press:  26 February 2011

Horst Hahn ,
R. S. Averback ,
T. Diaz De La Rubia  and
P. R. Okamoto
Horst Hahn
Affiliation:
Materials Science and Technology Division, Argonne National Laboratory, Argonne, IL 60439
R. S. Averback
Affiliation:
Materials Science and Technology Division, Argonne National Laboratory, Argonne, IL 60439
T. Diaz De La Rubia
Affiliation:
Dept. of Physics, SUNY at Albany, Albany, NY 12222
P. R. Okamoto
Affiliation:
Materials Science and Technology Division, Argonne National Laboratory, Argonne, IL 60439
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Abstract

Ion beam mixing (IM) was measured in homogeneous amorphous metallic alloys of Cu-Er and Ni-Ti as a function of temperature using tracer impurities, i.e., the so called “marker geometry”. In Cu-Er, a strong temperature dependence in IM was observed between 80 K and 373 K, indicating that radiation-enhanced diffusion mechanisms are operative in this metallic glass. Phase separation of the Cu-Er alloy was also observed under irradiation as Er segregated to the vacuum and SiO2 interfaces of the specimen. At low-temperatures, the amount of mixing in amorphous Ni-Ti is similar to that in pure Ni or Ti, but it is much greater in Cu-Er than in either Cu or Er.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 51: Symposium A – Beam-Solid Interactions and Phase Transformations , 1985 , 491
Copyright
Copyright © Materials Research Society 1985

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Footnotes

*

Work supported by the U. S. Department of Energy, BES-Materials Sciences, under Contract W-31-109-Eng-38.

References

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