Evaluation of experimental data of diffusion in semiinfinite two-phase systems with nonstationary interphase boundary II. application of the theory to the diffusion Characteristics determination

摘要

In this work, the survey of twelve final relations for the diffusion characteristics cal- culation from the experimental data under the assumption of the interphase boundary movement in time according to the parabolic law is presented. The diffusivities determi- nation can be performed by means of four methods which utilize the knowledge of the area below the concentration curves and the knowledge of the concentration gradients on the interphase boundary. The presented relations were applied to the diffusion evaluation of Al in the Ni_3-Ni system at T=1100 deg. C from the published data by author teams.