The migration of Hf and Zr in polycrystalline samples of the a phase was studied, at temperatures of between 1023 and 1145K (table 148), by using heavy-ion Rutherford back-scattering methods.
R.A.Pérez, F.Dyment, D.Abriola, G.G.Bermudez, H.Somacal: Journal of Nuclear Materials, 1992, 186[2], 206-8
Table 148
Diffusion of Hf and Zr in a-Ti
Diffusant | Temperature (K) | D (m2/s) |
Zr | 1133 | 4.7 x 10-17 |
Zr | 1100 | 2.7 x 10-17 |
Zr | 1065 | 5.1 x 10-18 |
Zr | 1023 | 1.1 x 10-18 |
Hf | 1145 | 1.1 x 10-17 |
Hf | 1079 | 1.5 x 10-18 |
Hf | 1023 | 4.6 x 10-19 |