By using an electrical resistivity technique, the self-diffusivity of Pb at the solubility limit of PbCl2 was equal to 4 x 10-9cm2/s at 270C. The diffusivity at 290C was equal to 7.9 x 10-9cm2/s. Measurement of Diffusion Coefficients of Heterovalent Additives in Ionic Crystals. H.Schmalzried, H.Wefing: Chimia, 1969, 23[12], 485-9

 

Table 47

Diffusivity of NbV in a NaCl-Saturated AlCl3 Melt

 

NbCl5 (M)

Temperature (C)

D (cm2/s)

0.0068

180

7.0 x 10-6

0.0134

160

6.6 x 10-6

0.0134

180

7.1 x 10-6

0.0134

220

1.1 x 10-5

0.0134

260

1.9 x 10-5

0.0134

300

2.5 x 10-5

0.0268

160

4.9 x 10-6

0.0268

180

5.8 x 10-6

0.0268

300

2.1 x 10-5

0.0519

160

4.8 x 10-6

0.0519

180

6.6 x 10-6