The diffusion of B in 3%Si alloy at between 900 and 1200C was measured by means of particle tracking auto-radiography. The results (table 189) could be described by:

D (m2/s) = 1.5 x 10-7 exp[-21.2(kcal/mol)/RT]

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

 

Table 189

Diffusivity of B in Fe-3%Si

 

Temperature (C)

D (m2/s)

904

1.694 x 10-11

954

2.613 x 10-11

1003

3.639 x 10-11

1056

4.879 x 10-11

1104

6.445 x 10-11