| It is well known that so-called stabilized zirconia is a perspective material for application as a solid electrolyte in high-temperature oxygen sensors. Fabrication of solid electrolytes from nano-sized precursors significantly improves their characteristics. In this investigation low-agglomerated nanopowders with a cristallite size of 3-5 nm have been synthesized in the ZrO2-HfO2-Y2O3 system using the back-coprecipitation method. The effect of the experimental conditions on the size of cristallites and agglomerates in the powders obtained has been studied. It has been shown that synthesis in ultrasonic bath enables to obtain precursors with the lowest degree of agglomeration. |
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