1987 Volume 28 Issue 3 Pages 191-197
Interdiffusion coefficients \ ildeD in Cu–Zn alloys have been determined by using diffusion couples consisting of pure copper wire as vapor absorbent and the alloy having 15 and 30 at% Zn from which zinc atoms volatile and by annealing the alloy having 15 at% Zn in an evacuating furnace. The values of \ ildeD thus obtained coincide with each other, but, they are 2∼5 times larger than those obtained previously by use of the usual solid-solid diffusion couples in a dilute region while they are almost equivalent in a highly concentrated region. The reasons have been considered in relation to the vacancy flux which comes from the surface into the alloy specimen.
