Question: 5) From a gaseous phase, nitrogen is to be diffused into pure iron at 700C. The diffusion coefficient for nitrogen in iron at 700C is

5) From a gaseous phase, nitrogen is to be diffused into

5) From a gaseous phase, nitrogen is to be diffused into pure iron at 700C. The diffusion coefficient for nitrogen in iron at 700C is 2.5 x 10-11 m2/s. If the surface concentration is maintained at 0.15 wt% N, what will be the concentration 2 mm from the surface after 5 h

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