It was noted that the diffusion of 65Zn in the disordered A2 phase did not exhibit an Arrhenius behavior. The data could be described by the expression:
D(cm2/s) = 0.0046 exp[-82.182(kJ/mol)/RT]
at temperatures of between 508 and 692C, and by:
D(cm2/s) = 0.01 exp[-105.557(kJ/mol)/RT]
at temperatures of between 692 and 826C. It was suggested that the observed behavior could be attributed to the influence of di-vacancies.
A.Jennane, C.Lexcellent, G.Moya, J.Bernardini: Journal de Physique IV, 1996, 6[2], 103-7
Table 110
Interdiffusion Coefficient, DSnSnCu, for the Cu-Zn-Sn System at 1073K
Zn(at%) | Sn(at%) | Value (m2/s) |
0.47 | 2.2 | 9.7 x 10-14 |
0.58 | 2.4 | 8.9 x 10-14 |
0.95 | 1.9 | 9.8 x 10-14 |
1.1 | 3.2 | 1.2 x 10-13 |
1.2 | 2.1 | 9.3 x 10-14 |
1.5 | 1.7 | 1.0 x 10-13 |
1.6 | 5.1 | 2.2 x 10-13 |
1.7 | 4.2 | 1.8 x 10-13 |
1.9 | 4.5 | 2.0 x 10-13 |
2.0 | 4.7 | 2.2 x 10-13 |
2.1 | 1.8 | 1.1 x 10-13 |
2.1 | 4.9 | 2.6 x 10-13 |
2.2 | 5.2 | 2.7 x 10-13 |
2.3 | 2.7 | 1.1 x 10-13 |
2.3 | 6.1 | 1.8 x 10-13 |
2.9 | 3.0 | 1.5 x 10-13 |
2.9 | 4.0 | 1.8 x 10-13 |
3.1 | 1.0 | 8.9 x 10-14 |
3.5 | 2.1 | 1.1 x 10-13 |
3.7 | 2.2 | 1.2 x 10-13 |
3.7 | 3.4 | 1.6 x 10-13 |
3.9 | 1.9 | 1.2 x 10-13 |
3.9 | 3.5 | 1.6 x 10-13 |
4.4 | 1.3 | 9.9 x 10-14 |
4.4 | 3.9 | 1.8 x 10-13 |
4.5 | 1.2 | 9.7 x 10-14 |
continued
Table 110 (continued)
Interdiffusion Coefficient, DSnSnCu, for the Cu-Zn-Sn System at 1073K
Zn(at%) | Sn(at%) | Value (m2/s) |
4.6 | 1.2 | 9.2 x 10-14 |
4.6 | 4.0 | 2.1 x 10-13 |
5.1 | 4.5 | 2.7 x 10-13 |
5.2 | 2.4 | 1.3 x 10-13 |
5.7 | 1.3 | 1.0 x 10-13 |
6.1 | 2.6 | 1.6 x 10-13 |
6.8 | 1.3 | 1.0 x 10-13 |
6.9 | 2.8 | 2.0 x 10-13 |
7.1 | 2.8 | 1.9 x 10-13 |
8.3 | 3.1 | 2.4 x 10-13 |
9.0 | 1.5 | 1.4 x 10-13 |
9.8 | 1.5 | 1.6 x 10-13 |
11 | 1.6 | 1.6 x 10-13 |
12 | 1.7 | 1.8 x 10-13 |