The diffusion of Ni in FCC Fe. There is 0.3 atoms % of Ni in a solid solution in FCC Fe @ point x.(adsbygoogle = window.adsbygoogle || []).push({});

Point y is 1 mm away and has 0.2 atoms % of Ni within the solid solution.

Temperature = 1000° C, D = 2ε^{-16}M^{2}/s

Calculate the flux (J) between points x & y.

Radius of Fe atom = 0.13 nm @ 1000°C; a = 0.37nm.

ATTEMPT AT A SOLUTION

Ni is FCC

4 atoms in unit cell of FCC. a= 4T/(√3)

# Atoms = 8*10^{28}

J = -D(dc/dx)

Δc = 1.6e26-2.4e26

Δx = 1mm = 1*10^-6 nm

J = -1.6e25 is this right?

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# Calculate the flux (J) Between points x and y

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