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Determine the surface concentration

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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

Reference no: EM132416441

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