Question: Calculate the self-diffusion coefficient of Fe in Problem 3.22, given the unit-cell parameter a = 2.87 . Problem 3.22 Assume that bcc iron at 1800

Calculate the self-diffusion coefficient of Fe in Problem 3.22, given the unit-cell parameter a = 2.87 Å.

Problem 3.22

Assume that bcc iron at 1800 K has a fraction of vacant Fe sites of 0.0001, an Fe atom vibration frequency

v = 10 s and an activation energy for hopping A* Gm = 29 kJ/ mol. What is the jump frequency of Fe atoms? On

v = 10 s and an activation energy for hopping A Gm = 29 kJ/ mol. What is the jump frequency of Fe atoms? On average, how many vibrations are there between jumps? What is the Fe progression rate at each site?

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