A capillary reservoir technique was used to study the self-diffusion of 115mCd in molten mixtures (table 157). It was found that the activation energy for Cd self-diffusion had a tendency to increase, as a function of composition, towards that of pure NaCl. The Cd self-diffusivity went through a maximum at about 60mol%NaCl.

J.Koster, J.A.A.Ketelaar: Journal de Chimie Physique et de Physicochimie Biologique, 1969, October, 171-6

 

 

Table 157

Self-Diffusion of 115mCd in Molten NaCl-CdCl2

 

CdCl2 (mol%)

Temperature (C)

Do (cm2/s)

Q (kcal/mol)

D1000K (cm2/s)

100.0

607-806

1.10 x 10-3

6.8

-

64.4

600-900

1.45 x 10-3

7.4

3.63 x 10-5

48.0

600-730

3.80 x 10-3

8.8

4.54 x 10-5

44.3

500-600

4.47 x 10-3

8.7

5.86 x 10-5

34.2

500-690

5.62 x 10-3

9.2

6.28 x 10-5

19.9

750-990

2.82 x 10-3

8.4

4.25 x 10-5