Authors: Nowotny, J.; Bak, T.; Sorrell, C. C.

Source: Advances in Applied Ceramics, Volume 104, Number 4, August 2005 , pp. 229-231(3)

Publisher: Maney Publishing

Abstract:

The present study, reported in a series of eleven papers summarised here, has aimed to determine the mechanism and kinetics of reactivity between zirconia and oxygen at elevated temperatures. The study is based on in situ monitoring of work function changes during oxidation and reduction of yttria-stabilised zirconia (YSZ). The reactivity of YSZ with oxygen was determined in terms of both oxygen chemisorption and oxygen incorporation and related charge transfer. The obtained work function data have been used to determine the oxygen chemisorption isobar for YSZ. The effect of surface properties on the reactivity of YSZ with oxygen has been assessed and the application of surface processing for the modification of reactivity examined. It has been found that work function measurements may be used for in situ examination of surface properties of oxide materials during processing at elevated temperatures and in gas phases of controlled composition.

Keywords: YTTRIA-STABILISED ZIRCONIA; OXIDE MATERIALS; SURFACE MODIFICATION; WORK FUNCTION

Document Type: Research Article

DOI: http://dx.doi.org/10.1179/174367605X46867

Publication date: 2005-08-01

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