Using the capillary reservoir technique, a study was made of the self-diffusion of 26Al in various melts (table 178). The results were taken to indicate the presence of various species in the melt: AlF63-, AlF4-, AlF3, AlF2+, Na2F+ and NaF.
Measurement of Diffusion Coefficients of Al-26 in NaF-AlF3 Baths. D.Harari, F.Lantelme, M.Chemla: Comptes Rendus de l’Academie des Sciences – C, 1970, 270[8], 653-6
Table 177
Diffusion of 22Na in Molten NaF
Temperature (C) | D (cm2/s) |
1022 | 1.03 x 10-4 |
1030 | 1.08 x 10-4 |
1045 | 1.10 x 10-4 |
1052 | 1.14 x 10-4 |
1069 | 1.19 x 10-4 |
1081 | 1.16 x 10-4 |
1102 | 1.24 x 10-4 |
1117 | 1.27 x 10-4 |
1120 | 1.28 x 10-4 |
1132 | 1.36 x 10-4 |
Table 178
Self-Diffusion of 26Al in NaF-AlF3 Melts
AlF3 (mol%) | Temperature (C) | D (cm2/s) |
2.06 | 1050 | 4.90 x 10-5 |
2.06 | 1049 | 5.62 x 10-5 |
2.06 | 1054 | 5.57 x 10-5 |
13.5 | 1041 | 7.45 x 10-5 |
13.5 | 1034 | 7.43 x 10-5 |
25 | 1052 | 6.77 x 10-5 |
25 | 1052 | 6.90 x 10-5 |
Table 179
Self-Diffusion of 18F in NaF-AlF3 Melts
AlF3 (mol%) | Temperature (C) | D (cm2/s) |
0 | 1049 | 9.67 x 10-5 |
0 | 1052 | 9.15 x 10-5 |
13.5 | 938 | 4.5 x 10-5 |
13.5 | 1012 | 5.72 x 10-5 |
13.5 | 1051 | 7.59 x 10-5 |
25.0 | 1048 | 5.65 x 10-5 |
25.0 | 1049.5 | 5.77 x 10-5 |
37.5 | 928 | 5.50 x 10-5 |
37.5 | 941 | 5.43 x 10-5 |
37.5 | 968.5 | 5.74 x 10-5 |
37.5 | 999.7 | 6.31 x 10-5 |