The temperature dependence of grain-boundary diffusion of 65Zn in polycrystalline aluminium

摘要: Abstract It is shown that the penetration plots of grain-boundary diffusion 65Zn in polycrystalline Al samples are curved at fixed temperatures and this upward curvature changes with annealing time. The profiles can be interpreted terms sub-boundary characterized by parameter P 1 (= D K 1δ, where boundary coefficient, segregation factor δ width) as well a distribution parameters for high-angle boundaries. range variation general large-angle grain boundaries 1, 3 4. temperature dependence 2 has also been determined. concluded if we approximate function one effective slope B-kinetic regime then weight different (with coefficients) vary greatly ...