Electron microprobe analysis and serial sectioning radiometric methods were used to monitor the interdiffusion of high-purity solid solutions. The results (table 265) showed that the interdiffusion coefficient was concentration-dependent, even though this was an almost ideal thermodynamic system.
L.Bonpunt, Y.Haget: Journal de Chimie Physique et de Physicochimie Biologique, 1974, 71[4], 537-40
Table 265
Activation Energy for KI-RbI
Interdiffusion at 545 to 615C
KI (mol%) | Q (kcal/mol) |
30 | 44.80 |
40 | 46.00 |
50 | 45.60 |
60 | 43.00 |
70 | 40.00 |
80 | 38.70 |