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Published May 15, 1988 | public
Journal Article Open

Calorimetric observations of amorphous and crystalline Ni-Zr alloy formation by solid-state reaction


Differential scanning calorimetry and x-ray diffraction are utilized in a study of solid-state vitrification of multilayered composites of Ni and Zr. In order to understand better and optimize the amorphizing reaction, we have examined the kinetics of competing reactions: the formation and growth of crystalline intermetallic compounds. The value of the activation energy, Ec, of the initial crystallization of the growing amorphous phase is determined to be Ec=2.0±0.1 eV, establishing an upper limit on the thermal stability of the amorphous-diffusion couple.

Additional Information

©1988 The American Physical Society. Received 7 August 1987. This work was supported by the U.S. Department of Energy under Contract No. De-AT03-81ER10870. We thank M. Atzmon and K. Samwer for helpful discussions.


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