The diffusion, permeation and solubility of D in α-type brasses was investigated. The diffusion parameters (table 29) were deduced from transient permeation-rate curves during deviations from the steady state.

Hydrogen Permeability through Alpha-Brass. G.R.Caskey, R.G.Derrick: Metallurgical Transactions A, 1977, 8, 511-3

 

Table 29

Diffusivity of D in α-Brass

 

Zn (wt%)

Zn (mol%)

Do (cm2/s)

E (kJ/mol)

0

0

2.54 x 10-2

47.1

5

4.87

6.16 x 10-3

40.2

10

9.75

5.68 x 10-3

41.0

15

14.6

4.88 x 10-3

40.2

20

19.6

7.48 x 10-3

44.4

30

29.4

7.82 x 10-3

44.8

35

34.4

7.82 x 10-3

43.5