抄録
Ionic conductivity of Na+ in β-or β″-Al2O3 is affected by their densi-ties.This paper deals with the influence of the particle size and the admixture (ZrO2, HfO2, Ta2O5 et al.) on the density of the samples and the ionic conductivity of Na+ in β″-Al2O3.
The ionic conductivities of Na+ in non admixed and admixed β″-Al2O3 were measured using an ion blocking electrodes (Au), and then arrhenius plots were made for ionic conductivities at various temperatures.
As the results, it was observed that the ionic conductivities of the samples increased with those densities. Also it was found that the admixture concentration has a limited value for the ionic conductivity.
