Thermomigration of Scandium in Aluminum

概要

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The redistribution of scandium in polycrystalline A1-0.04 at ppm Sc dilute alloy which was annealed under a temperature gradient was investigated by means of the neutron activation analysis. The remarkable result is that the concentration of scandium increased at both the hot and the cold sides of specimen. Such a distribution is caused by a movement of scandium toward the both ends through the specimen. The movement of scandium toward the cold end is explained qualitatively in terms of the scandium flow associated with vacancy flow. It is pointed out that such an induced solute flow plays an important role on the thermomigration in substitutional alloys. and that the vacancy distribution under a temperature gradient should be investigated quantitatively to establish a well understanding of thermomigration in substitutional alloys.
社団法人応用物理学会の論文
1979-05-05