Zirconium–Hafnium Interdiffusion in Polycrystalline Fluorite-Cubic CeO2─ZrO2─HfO2 Solid Solution |
| |
| Authors: | Yoshio Sakka Yasumichi Oishi Ken Ando Yoji Ikeda |
| |
| Affiliation: | Department of Nuclear Engineering, Faculty of Engineering, Kyushu University, Hakozaki, Fukuoka 812, Japan |
| |
| Abstract: | Zr–Hf interdiffusion was studied in the temperature range of 1650° to 1850°C in air for polycrystalline fluorite-cubic systems of 90CeO2·10(Zr1- x Hf x )O2 and 60CeO2·40(Zr1- x Hf x )O2. Lattice and grain-boundary diffusion parameters were calculated from the Zr–Hf concentration distributions by using the grain-boundary diffusion equation of Oishi and Ichimura. The cation iattice diffusivity was close to that in the fluorite-cubic Y2O2-ZrO2 solid solution. |
| |
| Keywords: | |
|
|
