Study of Point Defects in Non Crystalline Alloys by High Temperature Mass Transport Experiments

摘要

We present in this communication the results of new experiments designed to study the mass transport mechanism in non-crystalline metallic alloys. They are based on the isothermal measurement of the crystallization kinetics, either without constraint or under electron irradiation or hydrostatic pressure. These experiments show that in the alloys studied, (FeNi)/sub 8/(Pb)/sub 2/ and Ni/sub 6/Nb/sub 4/), irradiation enhances the diffusion on the one hand, and on the other that there exist an activation volume for diffusion, of the order of one atomic volume. We discuss then the atomic model of diffusion needed to explain our results. (ERA citation 13:014972)