Abstract
A study has been made of the interdiffusion of copper from an α solid solution into aluminium with special attention to minimizing experimental and computational errors. The form of the concentration-distance curves obtained showed that interdiffusion was independent of concentration within the range 0–0.5 wt.% copper. The activation energy calculated from the slope of a log e D ̃ versus T −1 plot was 31.12 ± 1.54 kcal/ g and the frequency factor D ̃ 0 was 0.29 −0.17 +0.43 cm 2/sec. It is concluded that the data obtained are closely related to the tracer diffusion of copper in aluminium.
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