The residual activity technique was used to study 14C tracer diffusion in a Fe-17Cr-12wt%Ni alloy. The results (table 82) could be described by:

D (cm2/s) = 9.6 x 10-1 exp[-41.0(kcal/mol)/RT]

R.A.Perkins, P.T.Carlson: Metallurgical Transactions, 1974, 5[6], 1511-4

 

Table 82

Diffusion of 14C in Fe-17Cr-12wt%Ni

 

Temperature (C)

D (cm2/s)

996

9.415 x 10-8

936

2.826 x 10-8

850

8.388 x 10-9

776

3.200 x 10-9

700

6.546 x 10-10

650

1.811 x 10-10

600

4.482 x 10-11

549

1.209 x 10-11

500

2.257 x 10-12