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Crystallization of amorphous Ni-Zr

Sulejmanovic S. D., Mihac T. P., Bikic S. I., Bajrovic N. A.

Archives of Materials Science

2007

Vol. 28, nr 1-4

160-163

Ni-Zr amorphous alloys (metallic glasses) in the form of ribbon can be prepared in a wide range of concentration which strongly influences their physical properties. Many properties of the metallic glasses differ considerably from those of their crystalline counterparts. In contrast to their crystalline counterparts the resistivities of amorphous alloys are very high. Such high resistivities can be explained by the extra scattering on the random atomic arrangement. Crystallization is the final stage on annealing of metallic glasses. This process is irreversible and is accompanied by abrupt change in electrical resistivity. We have investigated temperature dependance of electrical resistance for different concentrations and for different heating rates. By measuring the electrical resistance the various stages of the crystallization process can be identified.