Interdiffusion in the face-centered-cubic Co-Al binary alloys was studied by the diffusion-couple approach at 1173 to 1573K. Interdiffusion coefficients of the face-centered cubic Co-Al alloys were then evaluated by using the Sauer–Freise method. The effect of magnetic ordering on the Co-Al interdiffusion was observed at 1273K by examining the Arrhenius plots. The interdiffusion data were assessed to develop the atomic mobility for the face-centered-cubic Co-Al alloys, and their validity was tested by simulating the diffusion-couple experiments.

Interdiffusion and Atomic Mobility for Face-Centered-Cubic Co-Al Alloys. Y.W.Cui, B.Tang, R.Kato, R.Kainuma, K.Ishida: Metallurgical and Materials Transactions A, 2011, 42[9], 2542-6