SELF-DIFFUSION IN POLYCRYSTALLINE NICKEL

The self-diffusion of nickel has been studied in polycrystalline samples by a sectioning technique. There is evidence of grain boundary diffusion below temperatures of 1150 °C. The results obtained between 1150° and 1400 °C are representative of volume diffusion and are represented by the expressionA comparison is made with the results of other self-diffusion studies using Zener's hypothesis.