How Does Self Diffusion Occur?

How Does Self Diffusion Occur? Self-diffusion occurs by a vacancy mechanism, whereas carbon diffusion in iron is interstitial. Diffusion coefficient is the measure of mobility of diffusing species. or diffusion of substitutional atoms). ones (the atomic diameters decrease from C to N to H). What is meant by self-diffusion? [¦self di¦fyü·zhən] (solid-state physics) The spontaneous