Permeability measurements were performed on various Fe-Cr-Al membranes, with and without an oxide scale at the surface. The permeation was found to be decreased by the presence of an oxide film. R.I.Kripyakevich, J.I.Zvezdin, A.V.Guts, I.V.Semchishin: Fiziko-Khimicheskaya Mekhanika Materialov, 1971, 7[6], 47-51

 

Table 57

Effect of Deformation upon H Permeation Parameters

for Fe-Cr-Mo-Ni (AL 29-4-2)

 

Deformation (%)

Po (cm2/sPa½)

E (kJ/mol)

0

2.20 x 10-6

38.4a

25

6.60 x 10-7

40.3b

50

2.75 x 10-6

45.4b

75

2.96 x 10-6

47.3b

a: 80 to 320C, b: 110 to 260C