Initial sintering kinetics of non-stoichiometric CeO

Watanabe, Masashi; Seki, Takayuki*

Materials Science & Engineering B, 272, p.115369_1 - 115369_6, 2021/10

https://doi.org/10.1016/j.mseb.2021.115369

The effect of oxygen non-stoichiometry on the initial sintering behavior of CeO was investigated. It was found that the initial sintering of the stoichiometric and hypo-stoichiometric composition was controlled by the grain boundary diffusion. The activation energies of cation diffusion were derived from initial sintering data. Moreover, it is suggested that the cation diffusion was caused by a vacancy mechanism.