Abstract
Bulk and grain boundary diffusion of titanium in yttria fully stabilized zirconia was studied in air in the temperature range from 1200 to 1400°C. The secondary ion mass spectrometry (SIMS) technique was used to determine the diffusion profiles in the form of mean concentration vs depth in B-type kinetic region. In order to confirm that the diffusion occurred in the chosen kinetic regime the 3-dimensional distribution of titanium was also determined. The obtained results allowed to calculate the temperature dependence of the bulk diffusion coefficient D and the grain boundary diffusion parameter D' δs. Activation energies of these processes amount to 505 and 340 kJ mol −1, respectively.
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