Oxygen diffusion in yttria stabilised zirconia—experimental results and molecular dynamics calculations†
Abstract
Bulk oxygen self-diffusion in yttria-stabilised
Experimentally, 18O
The diffusion process was simulated with molecular dynamics using the program DL_POLY and comparing different potential sets. The oxygen diffusion coefficient was found to be of similar magnitude to the experimental value, and also showed similar concentration dependence with a maximum for YSZ containing 10 mol% yttria. The calculated activation enthalpies of oxygen transport are close to the values observed experimentally.