Diffusion of Cr–Fe–Al–Zn pigment in a zirconia glaze

Commercial samples of a white zirconium frit and a Cr–Fe–Al–Zn pigment were used as a diffusion pair. Interdiffusion was observed at temperatures >1000 °C, indicating that the growth of the formed interface can be described by a parabolic function, which is dependent on the diffusion coefficients of the reacting elements, the chemical potential of these elements and the system geometry.