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Problem 6.15 Nitrogen from a gaseous phase is to be diffused into pure iron at 675C. If the surface concentration is maintained at 0.2wt%N, what

Problem 6.15 Nitrogen from a gaseous phase is to be diffused into pure iron at 675C. If the surface concentration is maintained at 0.2wt%N, what will be the concentration 2mm from the surface after 25 ? The diffusion coefficient for nitrogen in iron at 675C is 2.81011m2/s. CsC0CxC0=0.20Cx0=1erf(2Dtx)

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