The self-diffusion of Ca in monocrystalline yttria-stabilized zirconia and calcia-stabilized zirconia (containing 10 to 32mol%Y2O3 and 11 or 17mol%CaO, respectively) was measured between 960 and 1700C. The stable isotope, 44Ca, was used as a tracer and the samples were analyzed using secondary ion mass spectrometry. The results could be described by:

(CaO-stabilized) 960-1700C:     D (cm2/s) = 4.5 x 101 exp[-5.1(eV)/kT]

M.Kilo, M.A.Taylor, C.Argirusis, G.Borchardt, B.Lesage, S.Weber, S.Scherrer, H.Scherrer, M.Schroeder, M.Martin: Journal of Applied Physics, 2003, 94[12], 7547-52