An outline was provided for the use of secondary ion mass spectrometry in the determination of diffusion data in metal oxides. The focus was on the determination of Nb bulk and grain boundary diffusion coefficients in TiO2 and zirconia (table 74).

Determination of Niobium Diffusion in Titania and Zirconia Using Secondary Ion Mass Spectrometry. L.R.Sheppard, M.F.Zhou, A.Atanacio, T.Bak, J.Nowotny, K.E.Prince: Advances in Applied Ceramics, 2007, 106[1-2], 89-94

Table 74

Diffusivity of 93Nb in TiO2 and ZrO2 at 1273K