Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1296933 | Solid State Ionics | 2008 | 4 Pages |
Abstract
Ag+-ion conducting composites based on silver-borate glasses and α-Al2O3 ceramic matrices were synthesized by a high-pressure method (p = 7.7GPa and t = 100-200°C). They exhibited improved mechanical properties (e.g. reduced brittleness). Their electrical conductivity, as well as the conductivity of the corresponding glasses was measured in the wide temperature range from â 190 to + 30°C. It was found out that for all measured samples (composites and glasses) the temperature dependence of the conductivity follows the Arrhenius formula with a single activation energy close to 0.30eV in the whole temperature range. The conductivity of the composites is lower than that of the corresponding glasses by a factor of 5-10, due to percolation phenomena. It was found out that by an appropriate thermal treatment, the conductivity of the composites can be raised to ca 2 · 10â 3S·cmâ 1 at room temperature.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
M. Foltyn, M. Wasiucionek, J.E. Garbarczyk, J.L. Nowinski, S. Gierlotka, B. Palosz,