Chemical interdiffusion was determined in amorphous bilayer samples (table 374). By using a Au marker layer, and by making a regular solution approximation, the tracer diffusivities of the various component elements were deduced.

H.Hahn, R.S.Averback, S.J.Rothman: Physical Review B, 1986, 33[12], 8825-8

 

Table 373

Diffusivity of Cr in Zr and Zr-Based Alloys

 

Material

Temperature(K)

D (m2/s)

Zr-2Sn

1059.3

1.5 x 10-13

Zr-2.5Nb

1059.3

7.9 x 10-14

Zr-2Sn

838.4

5.3 x 10-16

Zr-2.5Nb

838.4

2.2 x 10-16

 

 

Table 374

Diffusion in Zr67Ni33/Ni61Zr39 Layers

 

Temperature (K)

Coefficient

Value (cm2/s)

528

DNiZr

1.56 x 10-16

528

DNi

9.3 x 10-18

573

DNiZr

9.2 x 10-16

573

DNi

6.0 x 10-17