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Irradiation-Enhanced Diffusion in Metallic Glasses

Published online by Cambridge University Press:  15 February 2011

T. Schuler ,
P. Scharwaechter  and
W.F.J. Frank
T. Schuler
Affiliation:
Max-Planck-Institut für Metallforschung, Heisenbergstr. 1, D-70569 Stuttgart, Germany, wfrank@physix.mpi-stuttgart.mpg.de
P. Scharwaechter
Affiliation:
Institut für Theoretische und Angewandte Physik, Universität Stuttgart, Germany
W.F.J. Frank
Affiliation:
Max-Planck-Institut für Metallforschung, Heisenbergstr. 1, D-70569 Stuttgart, Germany, wfrank@physix.mpi-stuttgart.mpg.de Institut für Theoretische und Angewandte Physik, Universität Stuttgart, Germany
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Abstract

The influence of irradiation with particles (H+, He+, 15N+) on the self-diffusion in relaxed metallic glasses (59Fe in Fe91Zr9, 59Fe in Co58Fe5Ni10Si11B16, 95Zr in Fe24Zr76) has been investigated by means of the radiotracer technique using ion-beam sputtering for serial sectioning of the specimens. Combination of the results of these experiments with accompanying molecular-dynamics simulations not only leads to an understanding of a novel phenomenon of irradiation-enhanced diffusion observed on these materials, but also confirms and refines our previous view that, in the absence of irradiation, diffusion in relaxed metallic glasses occurs by collective diffusion mechanisms not involving intrinsic point defects as diffusion vehicles.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 540: Symposium N / Microstructural Processes in Irradiated Materials , 1998 , 195
Copyright
Copyright © Materials Research Society 1999

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References

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