Question: 1) a) What are the differences between vacancy diffusion and self-diffusion in pure metals. What are the components of the respective activation energies? b) Explain

1) a) What are the differences between vacancy diffusion and self-diffusion in pure metals. What are the components of the respective activation energies? b) Explain and discuss the concepts of self-diffusion and impurity atom diffusion. Give examples. (18 points)

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