The diffusion of B in 30%Ni alloy at between 900 and 1200C was measured by means of particle tracking auto-radiography. The results (table 130) could be described by:

D (m2/s) = 1.9 x 10-6 exp[-27.5(kcal/mol)/RT]

It was found that the B diffusivity in -Fe increased as Ni was added.

W.Wang, S.Zhang, X.He: Acta Metallurgica et Materialia, 1995, 43[4], 1693-9

 

Table 130

Diffusivity of B in Fe-30%Ni

 

Temperature (C)

D (m2/s)

954

2.330 x 10-11

1003

3.732 x 10-11

1056

5.859 x 10-11

1104

7.898 x 10-11

1154

1.172 x 10-10

1204

1.597 x 10-10