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Material science question
1. A metal A Is diffusing into another pure metal B to form an alloy. After 30 hours, the concentration of A is 3.2wt% at a distance of 1.5mm from the interface between metals A and B. The diffusion coefficient of A in B corresponding to the reaction conditions is 3.84 x 10-11m2/s. Determine the surface concentration Cs.
The error function table is given here
Z
Erf(z)
0.30
0.3286
0.35
0.3794
0.40
0.4284
0.45
0.4755
0.50
0.5205
0.55
0.5633
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