Diffusion of zinc in Cu and in CuZn solid solutions

Hetero-diffusion coefficients of zinc in Cu and self-diffusion coefficients of zinc in CuZn solid solutions have been determined in the concentration interval 8 to 38 at% Zn and temperature range 390 to 810 °C. The residual activity method has been applied using the isotope 65Zn. The values of the diffusion coefficients in the concentration interval 0 to 38 at% Zn satisfy an Arrhenius relation. The frequency factor and activation enthalpy concentration dependences can be described by an analysis developed in a previous paper [1].