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Kinetics of Metallic Glass Formation by Solid State Reactions

Published online by Cambridge University Press:  26 February 2011

K. Samwer ,
H Schröder  and
M. Moske
K. Samwer
Affiliation:
I. Physikalisches Institut, Universität Göttingen D-3400 Göttingen FRG
H Schröder
Affiliation:
I. Physikalisches Institut, Universität Göttingen D-3400 Göttingen FRG
M. Moske
Affiliation:
I. Physikalisches Institut, Universität Göttingen D-3400 Göttingen FRG
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Abstract

Metallic glass formation by solid state reactions has been observed in multilayer Zr-Co diffusion couples. The kinetics of the reaction are limited by the diffusion of the Co-atoms in the growing amorphous layer, at least for longer times, as shown by cross-sectional transmission electron microscopy and resistance measurements. The latter one provides the interdiffusion constant and the activation energy of about 1.1 eV. Deposition of the crystalline layers at 77 K results in an enhanced amorphization process in the first stage of the reaction and gives preliminary answers about the nucleation of the amorphous phase.

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