Question: The diffusion coefficients for nickel in iron are given at two temperatures, as follows: T (K) ____________ D (m2/s) 1473 ................. 2.2 10-15 1673

The diffusion coefficients for nickel in iron are given at two temperatures, as follows:

T (K) ____________ D (m2/s)

1473 ................. 2.2 × 10-15

1673 ................. 4.8 × 10-14

(a) Determine the values of D0 and the activation energy Qd.

(b) What is the magnitude of D at 1300°C (1573 K)?

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a Using Equation 59a we set up two simultaneous equations with Q d and D 0 as unknowns as follows No... View full answer

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