SINTERING OF GADOLINIA-DOPED CERIA PREPARED BY AL SYNTHESIS

Gadolinia-doped ceria (GDC) ceramics were by mechan ochemical synthesis of ceria and (10 mol%) powders with subsequent uniaxial and pressureless sinterin g. The mechanochemical was conducted in an attrito r with different media: neutral (distilled water) , basic (aqueous of ammonia), acidic (aqueous...

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Bibliographic Details
Published in:Journal of the European Ceramic Society 2007-01, Vol.27 (13-15), p.4345-4348
Main Authors: Maca, K, Cihlar, J, Castkova, K, Zmeskal, O, Hadraba, H
Format: Article
Language:English
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Summary:Gadolinia-doped ceria (GDC) ceramics were by mechan ochemical synthesis of ceria and (10 mol%) powders with subsequent uniaxial and pressureless sinterin g. The mechanochemical was conducted in an attrito r with different media: neutral (distilled water) , basic (aqueous of ammonia), acidic (aqueous solut ion of acid), and non-polar medium (xylene with st earic The effect of suspension composition and attrit milling time on the sintering behaviour and ionic ivity of GDC was studied. An attritor milling of 3-6 h was the optimum milling time from the of further s intering behaviour. Longer milling resulted in nanomet re-sized powders, whose behaviour deteriorated due to powder The appearance of agglomerates in the non-polar was reduced. The ionic conductivity of the was evaluated by impedance spectroscopy and corr with their microstructure.
ISSN:0955-2219