Chemical diffusion in Calcia-stabilized zirconia ceramic

Chemical diffusion of oxygen in Calcia-stabilized zirconia (CSZ) with impurities of Al 2O 3, SiO 2, MgO, Fe 2O 3 and TiO 2 was studied by the non-steady state permeation and the desorption techniques at 960–1450°C. The chemical diffusion coefficient, D, was found to be inversely proportional to the...

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Bibliographic Details
Published in:Solid state ionics 1986, Vol.18, p.736-740
Main Authors: Dou, Shixue, Masson, C.R., Pacey, P.D.
Format: Article
Language:English
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Summary:Chemical diffusion of oxygen in Calcia-stabilized zirconia (CSZ) with impurities of Al 2O 3, SiO 2, MgO, Fe 2O 3 and TiO 2 was studied by the non-steady state permeation and the desorption techniques at 960–1450°C. The chemical diffusion coefficient, D, was found to be inversely proportional to the relative deviation from stoichiometry, and to increase with increasing P O 2 . The time constant of equilibration processes with a surrounding atmosphere is increased as the concentration of the trapping centers is increased. The CSZ electrolyte free of Fe 2O 3 gives fast response in EMF.
ISSN:0167-2738
1872-7689
DOI:10.1016/0167-2738(86)90253-5