The diffusion of Fe2+ ions was found, using the serial sectioning technique, to proceed substitutionally at temperatures ranging from 232 to 449C. The results (table 36) could be described by:

D (cm2/s) = 15.1 exp[-1.27(eV)/kT]

Assuming that the activation enthalpy for Fe2+ migration was 0.6eV, the association enthalpy was deduced to be about 0.07eV for Fe2+ vacancy complexes.

Diffusion of Ferrous Ion in Silver Chloride. D.L.Foster, A.L.Laskar: Physica Status Solidi A, 1975, 29[1], 167-72

 

Table 35

Diffusivity of 59Fe in AgCl

 

Temperature (C)

D (cm2/s)

442.0

1.99 x 10-8

409.1

6.69 x 10-9

408.9

6.65 x 10-9

385.9

3.05 x 10-9

354.5

1.02 x 10-9

314.2

2.19 x 10-10

298.0

1.06 x 10-10

274.3

3.51 x 10-11