The diffusivity of this impurity in sintered Pb0.95Sr0.05(Ti0.47Zr0.53)-1wt%Nb2O5 was measured by using a tracer-sectioning method at between 600 and 1000C. It was found that the impurity had a very high diffusional mobility (table 159).

M.V.Slinkina, G.I.Dontsov, V.M.Zhukovskii, R.R.Khafizov: Izvestiya Akademii Nauk SSSR - Neorganicheskie Materialy, 1990, 26[9], 1964-6. [Inorganic Materials, 1990, 26[9], 1677-9]

Table 159

Diffusion Parameters for Cr in

Sintered Pb0.95Sr0.05(Ti0.47Zr0.53)-1wt%Nb2O5

 

Temperature (C)

Do (cm2/s)

E (kJ/mol)

700 - 1000

4.9 x 10-2

120

600 - 700

4.5 x 108

304