Preparation and Electrical Properties of Dense Ceramics with Nasicon Composition Sintered at Reduced Temperatures

A reduced temperature route is explored for the preparation of ceramics with NASICON composition. The procedure includes sol-gel synthesis, Sample Controlled Thermal Analysis of the precursor powders and hot-pressing the powders under 0.3 GPa and at temperatures between 600 and 900∘C. It is shown that ceramics with densities around 90% can be obtained by this route. Electrical conductivity values and activation energies are determined and discussed.

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Published on: Journal of Electroceramic 2004, 13, 817-823
Authors: O. Schaf, A. Weibel, P. L. Llewellyn, P. Knauth, N. Kaabbuathong, N.; M. L. Di Vona, S. Licoccia, E. Traversa