The tracer diffusion of Ag in dense polycrystalline specimens was investigated by using radiotracer plus serial-sectioning techniques. It was found that the diffusivity of 110Ag at 500 and 600C, under 1atm of O (table 23), could be described by:

D (cm2/s) = 155 exp[-196(kJ/mol)/RT]

Y.Fang, J.L.Routbort: Journal of Applied Physics, 1994, 75[1], 210-5

 

 

Table 23

Bulk Diffusivity of 110Ag in Bi2Sr2CuOx

 

Temperature (C)

D (cm2/s)

820

6.8 x 10-8

700

4.1 x 10-9

600

3.0 x 10-10