A capillary technique was used to investigate the diffusion of 42K in melts of better than 99% purity (table 189). The data for temperatures ranging from 870 to 1017C could be described by:

D (cm2/s) = 2.46 x 10-3 exp[-7.5(kcal/mol)/RT]

K.Grjotheim, S.Zuca: Acta Chemica Scandinavica, 1968, 2[2], 531-7

 

 

Table 189

Diffusion of 42K in Molten KF

 

Temperature (C)

D (cm2/s)

870

0.93 x 10-4

894

1.01 x 10-4

902

1.02 x 10-4

903

1.03 x 10-4

928

1.11 x 10-4

942

1.07 x 10-4

962

1.15 x 10-4

980

1.26 x 10-4

994

1.29 x 10-4

1017

1.37 x 10-4