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Dynamical Behavior of the Subsurface Region in Alloys Under Ion Bombardment at High Temperatures

Published online by Cambridge University Press:  15 February 2011

N. Q. Lam  and
H. Wiedersich
N. Q. Lam
Affiliation:
Materials Science Division, Argonne National Laboratory, Argonne, IL 60439
H. Wiedersich
Affiliation:
Materials Science Division, Argonne National Laboratory, Argonne, IL 60439
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Abstract

Modifications of subsurface alloy composition by bombardment with ions of several keV energy were investigated theoretically, using a phenomenological model which includes the effects of various processes, such as preferential sputtering, displacement mixing, Gibbsian adsorption, radiation-enhanced diffusion, and radiationinduced segregation. The nonuniformity of damage rates, resulting from slow-down of the incoming ions, was also taken into account. The alloy composition evolution in time and space was calculated numerically for different temperatures, using concentrated Ni-Cu as a model alloy system. A good qualitative agreement between the present model calculations and recent experimental measurements was obtained.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 7 , 1981 , 35
Copyright
Copyright © Materials Research Society 1982

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Footnotes

*

Work supported by the U. S. Department of Energy.

References

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