The diffusion of I in alkali metal iodide melts was studied by means of chronopotentiometry. The results for 973 to 1123K could be described by:
log[D (cm2/s)] = -0.647 – 0.003313/T
L.E.Ivanovskii, V.N.Nekrasov, V.A.Biryukov, V.S.Mirnov: Elektrokhimia, 1975, 11[9], 1371-3
Table 205
Arrhenius Parameters for Interdiffusion in NaI-KI Solid Solutions
KI (mol%) | Do (cm2/s) | Q (kcal/mol) |
0 | 0.1 | 28.5 |
5 | 0.3 | 30.8 |
10 | 0.8 | 32.0 |
15 | 1.3 | 32.7 |
20 | 3.2 | 34.0 |
25 | 4.7 | 34.5 |
30 | 4.8 | 34.7 |
35 | 14.7 | 35.9 |
40 | 19.8 | 36.3 |
45 | 30.7 | 36.8 |
50 | 25.5 | 36.3 |
55 | 33.7 | 36.8 |
60 | 42.4 | 37.3 |
65 | 49.2 | 37.7 |
continued
Table 205 (continued)
Arrhenius Parameters for Interdiffusion in NaI-KI Solid Solutions
KI (mol%) | Do (cm2/s) | Q (kcal/mol) |
70 | 28.7 | 36.8 |
75 | 11.3 | 35.4 |
80 | 5.7 | 34.5 |
85 | 2.1 | 33.1 |
90 | 0.1 | 29.0 |
95 | 0.03 | 26.7 |
100 | 0.005 | 22.0 |