PREPARATIONS AND CHARACTERIZATIONS OF CERAMICS BASED ON CESIUM TITANATE

Preparations of cesium titanates have been made by several routes: co- grinding, sol-gel and spray-drying. The results obtained with these di fferent methods are compared. Electrical characterisations of pure CsA lTiO4 have shown that this compound is not a conductor at room tempera ture. Another phase, Cs2Ti6O13, has been prepared. This last material has a slight conductivity (about 2 x 10(-7) S cm-1 at 200-degrees-C). Nevertheless, it is not stable in aqueous solution and it cannot be us ed in electrochemical applications in a water medium. If CsAlTiO4 is s ynthesised without precautions, sizeable Cs2Ti6O13 traces appear in th e samples. Conductivity and stability in water of the mixed compound a re intermediate between the characteristics of both pure materials.